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A Partial list of Publications & Patents

John C. Leffingwell, (-)-Rotundone, an Important Odor Active Constituent of Agarwood (Oud), is now FEMA GRAS, Leffingwell Reports, Vol. 8, (No. 1) 1-3, January 2017

Elena I. Savelieva, Liudmila K. Gustyleva, Elizaveta D. Kessenikh, Natalya S. Khlebnikova, John Leffingwell, Olga P. Gavrilova, and Tatiana Yu. Gagkaeva, Study of the Vapor Phase Over Fusarium Fungi Cultured on Various Substrates, Chemistry & Biodiversity, Vol. 13, (No. 7), 891-903, July 2016. doi: 10.1002/cbdv.201500284

John Leffingwell & Diane Leffingwell, Flavours & fragrances: Recent advances in biotechnology, Speciality Chemicals Magazine, Vol. 35 (No. 5), pp. 32-34, May 2015

John C. Leffingwell, E.D. Alford, Diane Leffingwell - Volatile Constituents of Commercial Canned Pumpkin Puree (ex Cucurbita moschata) by Dynamic Headspace Analysis, Leffingwell Reports, Vol. 7 (No. 3), 1-6, March 2015

John Leffingwell & Diane Leffingwell, Biotechnology - Conquests and Challenges in Flavors & Fragrances, Leffingwell Reports, Vol. 7 (No. 2), 1-1, March 2015

John C. Leffingwell, E.D. Alford, Diane Leffingwell - Identification of the Volatile Constituents of Raw Pumpkin (Cucurbita pepo L.) by Dynamic Headspace Analyses, Leffingwell Reports, Vol. 7 (No. 1), 1-14, January 2015

John C. Leffingwell, Chemoreception & Tobacco (Presentation to Centers for Disease Control and Prevention, Atlanta, GA), October 6, 2014

John C. Leffingwell, Oxidative Coupling of Aldehydes & Imines III. An Entry to the Synthesis of Highly Substituted Pyrrolidines, Leffingwell Reports, Vol. 6 (No. 3), 1-12, July 2014

John C. Leffingwell, Oxidative Coupling of Aldehydes & Imines II. An Entry to the Synthesis of Tropane Alkaloid Analogs (di & triazabicyclo[3.2.1]octan-3-ones) by Dipolar Additions, Leffingwell Reports, Vol. 6 (No. 2), 1-9, July 2014

John C. Leffingwell, Oxidative Coupling of Aldehydes & Imines I. An Entry to the Synthesis of 6,6,7,7-Tetraalkyl Tropane Alkaloid Analogs, Leffingwell Reports, Vol 6. (No 1), 1-18, June 2014

John C. Leffingwell & David G. Rowsell, Wilkinson Sword Cooling Compounds: From the Beginning to Now, Perfumer & Flavorist, Vol. 39, No. 3, 34-43, 2014

John Leffingwell & Diane Leffingwell, Flavor Properties of FEMA GRAS List 26 Flavor Chemicals, Perfumer & Flavorist, Vol. 39, No. 1, 26-37: 2014

John C. Leffingwell, E.D. Alford, Diane Leffingwell & Roger Penn, Identification of the Volatile Constituents of Cyprian Latakia Tobacco by Dynamic and Static Headspace Analyses, Leffingwell Reports, Vol. 5(2), November 2013,1-29

John C. Leffingwell, E.D. Alford & Diane Leffingwell, Aroma Constituents of a Supercritical CO2 Extract of Kentucky Dark Fire-Cured Tobacco, Leffingwell Reports, Vol. 5(1), July 2013

John Leffingwell, Flavor Properties of FEMA GRAS List 25 Flavor Chemicals, Perfumer & Flavorist, Vol 36, June 2011, pp. 24-31

John C. & Diane Leffingwell, Chiral chemistry in flavours & fragrances, Speciality Chemicals Magazine, March 2011, pp. 30-33

John C. Leffingwell & E.D. Alford, Volatile Constituents of the Giant Puffball Mushroom (Calvatia gigantea), Leffingwell Reports, Vol. 4, March 2011

John C. Leffingwell, Cooling Ingredients and Their Mechanism of Action, in Handbook of Cosmetic Science and Technology, Third edition, André O. Barel, Marc Paye, and Howard I. Maibach, Editors, Pub: Informa Healthcare: New York. Chapter 65, pp. 661-675 (2009.)

Ashok K. Moza, Hong Sun, Stephen Rohde, Diane Leffingwell & John Charles Leffingwell, Cooling compositions, United States Patent Application 20080293821 A1 (Nov.27, 2008)

Ashok K. Moza, Stephen E. Rohde, John C. Lefingwell & Diane Leffingwell, Use of a liquid cooling sensate to provide a pungent, warming or tingling sensate composition, United States Patent Application No. 2008/0038386 A1 (Feb. 14, 2008)

Ashok K. Moza, Stephen E. Rohde, John C. Lefingwell & Diane Leffingwell, Cooling agents as flavor and saltiness enhancers, U.S. Patent Application No. 2007/0059417 A1 (March 15,2007)

Ashok K. Moza, Hong Sun, John C. Leffingwell, Diane Leflingwell & Stephen Rohde, Liquid composition of 2-Isopropyl-N,2,3-trimethylbutyramide and N-Ethyl-p-menthane-3-carboxamide, its preparation method and its applications as a cooling agent and flavor enhancer, U.S. Patent Application No. 2007/0048424 A1 (March 1, 2007)

John C. Leffingwell, Chirality and odor perception: Scents of precious woods, Supplement to Chimica Oggi/CHEMISTRY TODAY Vol 24, No. 4, Chiral technologies, 36-38 (2006)

John C. Leffingwell1 and E. D. Alford, Volatile Constituents of Perique Tobacco, Electronic Journal of Environmental, Agricultural and Food Chemistry, 4(2), 2005. March - April Issue.

John C. Leffingwell, Reflections on a Half Century of Flavor Chemistry (Society of Flavor Chemists 50th Anniversary Flavor Symposium), October 7, 2004

John C. Leffingwell, The Art & Science of Fragrance & Flavor Creation (Presentation to The Society of Flavor Chemists), December 4, 2003

Leffingwell, J. C., Chirality & Bioactivity I.: Pharmacology, Leffingwell Reports, Vol. 3 (No. 1), May 2003

Leffingwell, J., Olfaction (Sense of Smell), Cosmetics & Medicine (Moscow), No. 3, 24-33 (2002) in Russian ( translated by Sergey Andreev) - For the English version preprint see http://www.leffingwell.com/download/Olfaction5.pdf

Leffingwell, J., Olfaction (Sense of Smell), Part 2, Cosmetics & Medicine (Moscow), No. 4, 6-13 (2002) in Russian ( translated by Sergey Andreev) - For the English version preprint see http://www.leffingwell.com/download/Olfaction5.pdf

Leffingwell, J. C., Saffron - Aroma from Carotenoids, Leffingwell Reports, Vol. 2, (No. 5) October 2002

Leffingwell, J. C., Carotenoids as Flavor & Fragrance Precursors , Leffingwell Reports, Vol. 2, (No. 3) October 2002

Leffingwell, J. C., Boronia - Aroma from Carotenoids, Leffingwell Reports, Vol. 2, (No. 4) October 2002

Leffingwell, J. C., Osmanthus, Leffingwell Reports, Vol. 2, (No. 2) October 2002

Leffingwell, J. C., Tobacco - Aroma from Carotenoids, Leffingwell Reports, Vol. 2, (No. 6) October 2002

Leffingwell, J. C., Olfaction - V, Leffingwell Reports, Vol. 2, (No. 1) May 2002

Leffingwell, J. C., Rose (Rosa damascena) - a part of our series on aroma materials produced by carotenoid degradation., Leffingwell Reports, Vol. 1, (No. 3) February, 2001

Leffingwell, J. C., Olfaction - A Review, Leffingwell Reports, Vol. 1, (No.1) February, 2001

Leffingwell, J. C., Olfaction - II, Leffingwell Reports, Vol. 1, (No. 4) September, 2001

Leffingwell, J.C., Leaf chemistry: Basic chemical constituents of tobacco leaf and differences among tobacco types, in Tobacco - Production, Chemistry and Technology, D.L. Davis and M.T. Nielsen, Editors, CORESTA, Blackwell Science, Ltd, London (1999), pp. 265-284.

Leffingwell, John C. and Diane Leffingwell, GRAS Flavor Chemicals-Detection Thresholds, Perfumer & Flavorist, 16(1), 1-19 (1991)

Leffingwell, John C. and Diane Leffingwell, Chemical and sensory aspects of tobacco flavor, Rec. Adv. Tob. Sci., 14, 169-218 (1988)

Schiffman S. S., Leffingwell J. C., Perception of odors of simple pyrazines by young and elderly subjects: a multidimensional analysis., Pharmacol Biochem Behav., (6):787-98 ( 1981)

Harllee, G.C. & J.C. Leffingwell, Casing Materials - Cocoa (Part II), Tobacco International 181 (No. 6) March 23, 1979 pp. 18-43

Harllee, G.C. & J.C. Leffingwell, Casing Materials - Cocoa (Part I), Tobacco International 181 (No. 5) March 9, 1979 pp. 40-52

Leffingwell, J. C., Nitrogen components of leaf and their relationship to smoking quality and aroma, Rec. Adv. Tob. Sci., 2, 1-31 (1976)

Leffingwell, J.C. & R.E. Shackelford, Laevo-Menthol - Syntheses and organoleptic properties, Cosmetics and Perfumery, 89(6), 69-89, 1974

Leffingwell, J. C., et. al., Clary Sage Production in the Southeastern United States, International Congress of Essential Oils, San Fransisco, Sept. 1974

Leffingwell, J.C., Alkylation of bicyclic imines with the Stork-Dowd reagent system, J. Chem. Soc., Chem. Comm., (1973), pp 299-300

Leffingwell, J.C., Ronad E. Shackelford ; H. J. Young, A novel neighboring group participation in the solvolysis of 3,4-epoxycarene with a carboxylic acid, Synthetic Communications, 2(2), 105-106 (1972)

Leffingwell, J. C. et al., Tobacco flavoring for Smoking Products, Winston-Salem N.C. 1972

Leffingwell, J. C., Tobacco flavoring for Smoking Products II. Tobacco Science, Vol. 18, pp 55-57 (1974)

Leffingwell, J.C., A new procedure for the alkylation of isophorone at the 4-position, Tetrahedron Letters, 1653-1656 (1970)

Leffingwell, J.C., et.al., A novel ring contraction during the vapor phase pyrolysis of substituted trans-1-hydroxy 2-aetoxycyclohexanes, Tetrahedron Letters, 2003-2006 (1970)

Leffingwell, J.C., The oxidative coupling of aliphatic aldehydes, ", J. Chem. Soc., Chem. Comm., (1970), pp 357-58

Leffingwell, J.C., et al, "A New Synthetic Method for the Preparation of Aromatic Aldehydes, Ketones, and Schiff Bases", J. Chem. Soc., Chem. Comm., (1969), pp 1151-1152

E. Royals & Leffingwell, J.C., Reactions of the Limonene 1,2-Oxides, J. Org. Chem., 31(6), 1937-44 (1966)

Leffingwell, J.C. & E.E. Royals, Conformational aspects in the opening of cis/trans 1,4-dialkyl substituted 1,2-cyclohexene epoxides with acetic acid, Tetrahedron Letters, 3829-3837 (1965).

E. E. Royals & Leffingwell, J.C., Structure of Ethyl dehydroacetate, J. Org. Chem., 30(4), 1255-56 (1965)

E. E. Royals & Leffingwell, J.C., The absolute configurations of the carvomenthols, J. Am. Chem. Soc, 10, 2067-68 (1964)

Leffingwell, J.C. & E. Royals, alpha-Pinene Oxide Reaction with Acetic Acid, J. Org. Chem., 29(7), 2098-2099 (1964)

Leffingwell, J.C., The Mechanism of Formation of Pinol, Msc. Thesis, Emory University, 1962, Department of Chemistry

Leffingwell, J.C., A Study of Some Terpene Oxides: Conformational Effects in Substituted Cyclohexene Oxides, PhD Thesis, Emory University, 1963, Department of Chemistry

J.C. Leffingwell, Verfahren zur Herstellung dimerer Imine, Swiss Patent No. 540,885 (October 15, 1973).

J.C. Leffingwell, Rauchwarenprodukt, Swiss Patent No. 540,654 (October 15, 1973).

J.C. Leffingwell, Verfahren zur Herstellung dimerer Imine aus monomeren Imenen, Swiss Patent No. 540,884 (October 15, 1973).

J.C. Leffingwell & R.E. Shackelford, Verfahren zur Herstellung von im Cyclopentylring substituierten Alkylcyclopentylketonen, Swiss Patent No. 537,351 (July 13, 1973)

J.C. Leffingwell, Verfahren zur Herstellung von Aldehyde-Kupplungs-producten, Swiss Patent No. 540,870 (October 15, 1973).

J.C. Leffingwell, Tobacco Product, US Patent No. 3,746,010 (Jul 17, 1973)

J.C. Leffingwell, Process for the Preparation of Dimeric Amines and Pyrroles , US Patent No. 3,709,890 (Jan. 9, 1973)

J.C. Leffingwell, Verfahren zur Herstellung von Aldehyde- oder KetonKupplungsproducten, Swiss Patent No. 527,782 (October 31, 1972).

J.C. Leffingwell, Verfahren zur Herstellung von Pyrolen, German Patent No. 1,795,618 (April 6, 1972)

J.C. Leffingwell, Preparation of a Terpene Alcohol , US Patent No. 3,676,504 (July 11, 1972)

J.C. Leffingwell, Treatment of 2-Substituted Aldehydes with Lead Dioxide, US Patent No. 3,658,849 (April 25, 1972)

J.C. Leffingwell & R.E. Shackelford, Verfahren zur Herstellung von 1-Mentheneepoxyd, Swiss Patent No. 519,494 (April 14, 1972).

J.C. Leffingwell & R.E. Shackelford, SYNTHESIS OF ALKYL CYCLOPENTYL KETONES, US Patent No. 3,689,562 (Sept. 5, 1972)

J.C. Leffingwell, ISOPHORONE DERIVATIVES HAVING A NITRILE-CONTAINING SUBSTITUENT IN THE 4-POSITION, US Patent No. 3,655,720 (April 11, 1972)

J.C. Leffingwell, Verfahren zur Herstellung von Imin- oder Pyrrolverbindungen, German Patent No. 1,668,625 (July 29, 1971)

J.C. Leffingwell, Verfahren zur Herstellung organischer Verbindungen aus monomeren Iminen, German Patent No. 1,668,626 (July 29, 1971)

J.C. Leffingwell, Tabakproduct, German Patent No. 2.019,252 (February 11, 1971)

J.C. Leffingwell & R.E. Shackelford, Verfahren zur Herstellung von Alkylcyclopentylketonen, German Patent No. 2,012,093 (February 25, 1971).

J.C. Leffingwell & R.E. Shackelford, Preparation of Ketones, Great Britain Patent No. 1,240,423 (July 21, 1971).

J.C. Leffingwell, Synthesis of Organic Compounds from Aldehydes, Great Britain Patent No. 1,246,232 (Sept. 15, 1971).

J.C. Leffingwell, Verfahren zur Herstellung von Isophornderivaten, German Patent No. 2,004,853 (Jan 7, 1971)

J.C. Leffingwell, Treatment of Isophorone, Great Britain Patent No. 1,226,730 (Mar 31, 1971).

J.C. Leffingwell, Preparation of a Terpene Alcohol, US Patent No. 3,609,197 (Sept 28, 1971)

J.C. Leffingwell, Verfahren zur Herstellung von Terpinen-4-ol, Swiss Patent No. 502,286 (March 15, 1971).

J.C. Leffingwell, Preparation of Terpinen-4-ol, Great Britain Patent No. 1,223,241 (Feb. 24, 1971)

J.C. Leffingwell, PROCESS OF COUPLING ALDEHYDES AND KETONES, US Patent No. 3,609,193 (Sept 28, 1971)

J.C. Leffingwell, PREPARATION OF MONOMERIC OR DIMERIC IMINES AND PYRROLES, US Patent No. 3,598,827 (Aug. 10, 1971)

J.C. Leffingwell, Verfahren zur Herstellung von Dihydrocarvon, Swiss Patent No. 503,681 (April 15, 1971)

J.C. Leffingwell & R.E. Shackelford, Epoxidation Process, Great Britain Patent No. 1,219,040 (Jan. 13, 1971)

J.C. Leffingwell & R.E. Shackelford, Trennung und Umwandlung von isomeren Cyclohexenderivaten, Swiss Patent No. 510,006 (Aug. 31, 1971)

J.C. Leffingwell & R.E. Shackelford, Epoxidation of 1-Menthene, Great Britain Patent No. 1,226,782 (March 31, 1971)

J.C. Leffingwell, Tobacco Product, US Patent No. 3,625,224 (Dec. 7, 1971)

J.C. Leffingwell, Process for Preparing Aldehyde or Ketone Coupling Products, Great Britain Patent No. 1,209,493 (October 21, 1970)

J.C. Leffingwell, A Process for Synthesizing Imine or Pyrrole Compounds, Great Britain Patent No. 1,178,192 (January 21, 1970)

J.C. Leffingwell, A Process for Synthesizing Organic Compounds from Monomeric Imines, Great Britain Patent No. 1,177,160 (January 7, 1970)

J.C. Leffingwell & R.E. Shackelford, Procede de preparation d'alcoyl cyclopentyl cetones, French Patent No. 2,037,991 (December 31, 1970).

J.C. Leffingwell, Synthese van alkylcyclopentyketonen, Netherlands Patent No. 7,003,145 (Sept. 15, 1970)

J.C. Leffingwell, Procede de preparation 1,4-dioxo-butanes et 1-oxo-3-oxa-pentenes tetrasubstiues a partir d'aldehydes, French Patent No. 2,035,537 (December 18, 1970).

J.C. Leffingwell, Derives de l'isophooone, Belgium Patent No. 745,395 (August 3, 1970)

J.C. Leffingwell, Procede de derives d'isophorone, French Patent No. 2,033,827 (December 4, 1970).

J.C. Leffingwell, Werkwijze voor het bereiden van isophoronderivaten, Netherlands Patent No. 7,001,497 (Aug. 5, 1970).

J.C. Leffingwell, Terpinen-4-ol und Verfahren zu seiner Herstellung, German Patent No. 1,911,724 (March 19, 1970).

J.C. Leffingwell, SYNTHESIS OF DIHYDROCARVONE, US Patent No. 3,538,164 (Nov 3, 1970)

J.C. Leffingwell, Verfahren zur Herstellung von Dihydrocarvon, German Patent No. 1,814,025 (Feb. 26, 1970)

J.C. Leffingwell, Procede de preparation de Dihydrocarvone, French Patent No. 1,594,462 (July 10, 1970)

J.C. Leffingwell, Process for the Prepation of Dihydrocarvone, Great Britain Patent No. 1,209,396 (Oct 21, 1970)

J.C. Leffingwell & R.E. Shackelford, Epoxydation von 1-Menthen, German Patent No. 1,957,419 (Dec. 23, 1970)

J.C. Leffingwell & R.E. Shackelford, Procede d'epoxydation de terpenes, French Patent No. 2,023,262 (Aug. 7, 1970)

J.C. Leffingwell & R.E. Shackelford, Epoxydering van 1-menthen, Netherlands Patent No. 6917152 (May 19, 1970)

J.C. Leffingwell & R.E. Shackelford, Separation of Isomers of 1,4-Dialkyl- and 1-Alkyl-4-alkenyl-1,2-epoxycyclohexanes, Great Britain Patent No. 1,201,742 (Aug. 12, 1970)

J.C. Leffingwell & R.E. Shackelford, Trennung und Umwandlung von isomeren Cyclohexenderivaten, German Patent No. 1,908,274 (July 30, 1970)

J.C. Leffingwell & R.E. Shackelford, Verfahren zur Herstellung von 1-Mentheneepoxyd, Swiss Patent No. 495,350 (Oct 15, 1970).

J.C. Leffingwell & R.E. Shackelford, Procede de preparation d'epoxyde de 1-menthene, French Patent No. 1,591,866 (Aug. 7, 1970)

J.C. Leffingwell, Procede de preparation du terpinen-4-ol, French Patent No. 2,003,498 (Nov 7, 1969).

J.C. Leffingwell, Werkwijze voor het bereiden van Dihydrocarvon, Netherlands Patent No. 6,900,753 (Aug. 12, 1969).

J.C. Leffingwell, PROCESS FOR MAKING 4,4-DIMETHYL-3-BUTENYL METHYL KETONES, INTERMEDIATES THEREFOR AND THE SAID INTERMEDIATES, US Patent No. 3,420,827 (Jan. 7, 1969)

J.C. Leffingwell & R.E. Shackelford, Procede de separation d'isomeres de derives d'epoxycyclohexane et leur transformation ulterieure, French Patent No. 2,002,595 (Oct 31, 1969)

J.C. Leffingwell & R.E. Shackelford, Scheidingswerkvijze, Netherlands Patent No. 6,902,885 (Aug 28, 1969)

J.C. Leffingwell & R.E. Shackelford, Verfahren zur Herstellung von 1-Mentheneepoxyd, German Patent No. 1,807,324 (Aug 14, 1969).

J.C. Leffingwell, Werkwijze ter bereiden van 1-menthenepoxyde, Netherlands Patent No. 6,818,299 (June 30, 1969).

J.C. Leffingwell, Procede de Preparation d'imines et de pyrolles, Belgium Patent No. 706726 (May 17, 1968)

J.C. Leffingwell, Werkwijze voor het van imine- of pyrroolverbindigen, Netherlands Patent No. 6,715,508 (May 20, 1968)

J.C. Leffingwell, Procede de Preparation d'imines dimeres et de pyrolles par oxidation d'imines monomeres, Belgium Patent No. 706725 (May 17, 1968)

J.C. Leffingwell, Werkwijze voor het bereiden van imineverbindingen, Netherlands Patent No. 6,715,507 (May 20, 1968)

J.C. Leffingwell, Werkwijze voor het bereiden van terpinen 4-ol, Netherlands Patent No. 6,903,499 (Sept. 10, 1968).

J.C. Leffingwell, SYNTHESIS OF ALKYL CYCLOPENTYL KETONES, Canadian Patent No. 895916 (March 21, 1972)

J.C. Leffingwell, TREATMENT OF ISOPHORONE, Canadian Patent No. 895899 (March 21, 1972)

J.C. Leffingwell, SYNTHESIS OF ORGANIC COMPOUNDS FROM ALDEHYDES, Canadian Patent No. 879111 (August 24, 1971)

J.C. Leffingwell, SYNTHESIS OF DIHYDROCARVONE, Canadian Patent No. 866218 (March 16, 1971)

J.C. Leffingwell, SYNTHESIS OF ORGANIC COMPOUNDS FROM ALDEHYDES AND KETONES, Canadian Patent No. 866199 (March 16, 1971)

J.C. Leffingwell, TREATMENT OF 1,4-DIALKYL-1,2-EPOXYCYCLOHEXANES, Canadian Patent No. 863968 (February 16, 1971)

J.C. Leffingwell & R.E. Shackelford, EPOXIDATION PROCESS, Canadian Patent No. 854722 (October 27, 1970)

J.C. Leffingwell & R.E. Shackelford, EPOXIDATION PROCESS, Canadian Patent No. 854226 (October 20, 1970)

J.C. Leffingwell, IMINE AND PYRROLE SYNTHESIS, Canadian Patent No. 849546 (August 18, 1970)

J.C. Leffingwell, PROCESS FOR PREPARING TERPINENE-4-OL, Canadian Patent No. 844002 (June 9, 1970)

J.C. Leffingwell, OXIDATIVE DIMERIZATION OF IMINES, Canadian Patent No. 820902 (August 19, 1969)

J.C. Leffingwell, DERIVES DE L'ISOPHORONE, Belgium Patent No. 745395 (August 3, 1970)

J.C. Leffingwell, Verfahren zur Herstellung von Isophoronderivaten, German Patent No. 2004853 (January 7, 1971)

 

 Web Articles by J.C. Leffingwell (1999-)

1. Chirality & Odour Perception at http://www.leffingwell.com/chirality/chirality.htm

2. Flavor & Fragrance Industry Leaders at http://www.leffingwell.com/top_10.htm

3. Odor Detection Thresholds of GRAS Flavor Chemicals at http://www.leffingwell.com/odorback.htm

4. LYCOPENE - The Ultimate Phytochemical Nutraceutical? at http://www.leffingwell.com/lycopene.htm

5. Carotenoids as Flavor & Fragrance Precursors at http://www.leffingwell.com/caroten.htm

6. Boronia - Aromas from Carotenoids at http://www.leffingwell.com/boronia.htm

7. Saffron - Aromas from Carotenoids at http://www.leffingwell.com/saffron.htm

8. Rose (Rosa damascena) - Aromas from Carotenoids at http://www.leffingwell.com/rose.htm

9. Osmanthus - Aromas from Carotenoids at http://www.leffingwell.com/osmanthus.htm

10. Tobacco - Aromas from Carotenoids at http://www.leffingwell.com/tob.htm

11. Carotenoids in Light Harvesting Complexes at http://www.leffingwell.com/lhc.htm

12. Menthol Enantiomers - Organoleptic Properties at http://www.leffingwell.com/menthol1/menthol1.htm

13. Cool without Menthol & Cooler than Menthol at http://www.leffingwell.com/cooler_than_menthol.htm

14. Aldehydes - GRAS: Odor Properties and Molecular Visualization at http://www.leffingwell.com/ald.htm

15. Alkenols: Odor Properties and Molecular Visualization at http://www.leffingwell.com/burnt.htm

16. Burnt Sugar Notes: Odor Properties and Molecular Visualization at http://www.leffingwell.com/dlacton.htm

17. delta-Lactones - GRAS: Odor Properties and Molecular Visualization at http://www.leffingwell.com/dlacton.htm

18. Esters - GRAS: Odor Properties and Molecular Visualization at http://www.leffingwell.com/esters.htm

19. gamma-Lactones - GRAS: Odor Properties and Molecular Visualization at http://www.leffingwell.com/glacton.htm

20. Pyrazines - GRAS: Odor Properties and Molecular Visualization at http://www.leffingwell.com/pyrazine.htm

21. GC-MS analysis of hardwood smoke flavor at http://www.leffingwell.com/smoke.htm

22. GC-MS analysis of Dark Fire-cured Tobacco at http://www.leffingwell.com/firecured.htm

23. Synthesis of (-)-Menthol from (+)-Citronellal at http://www.leffingwell.com/menthol2/menthol2.htm

25. Synthesis of (-)-Menthol from (+)-Pulegone at http://www.leffingwell.com/menthol3/menthol3.htm

26. Synthesis of (-)-Menthol from (-)-Piperitone at http://www.leffingwell.com/menthol4/menthol4.htm

27. SCM-GLIDCO (-)-Menthol Synthesis from (-)-beta-Phellandrene at http://www.leffingwell.com/menthol5/menthol5.htm

28. (-)-Menthol Synthesis from (-)-delta-3-Carene at http://www.leffingwell.com/menthol6/menthol6.htm

29. (-)-Menthol Synthesis from (+)-Limonene at http://www.leffingwell.com/menthol7/menthol7.htm

30. (-)-Menthol Synthesis from (-)-beta-Pinene at http://www.leffingwell.com/menthol8/menthol8.htm

31. H&R (-)-Menthol Synthesis from m-Cresol / Thymol at http://www.leffingwell.com/menthol9/menthol9.htm

32. Takasago (-)-Menthol Synthesis from Myrcene at http://www.leffingwell.com/menthol10/menthol10.htm

33. (-)-Menthol via Lipase Resolution at http://www.leffingwell.com/menthol10/menthol11.htm

34. (-)-Menthol from Mesityl oxide via Piperitenone at http://www.leffingwell.com/menthol10/menthol12.htm

35. Olfaction at http://www.leffingwell.com/olfaction.htm

Note - www.leffingwell.com has been honored as the Chemweb.com - Alchemist webpick (May 1999) and Science magazines Netwatch webpick (October 2000)

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