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A Partial list of Publications
& Patents
1a. 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. In Press.
1b. 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)
1c. 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)
1d. 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)
1e. 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)
1f. 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.
1g. John C. Leffingwell, Chirality
& Bioactivity I.: Pharmacology, Chemistry Preprint
Archive, Volume 2003, Issue 5, May 2003, Pages
109-137 (User Name: johnleffingwell3 ; Password:
jackl)
1h. Leffingwell, J. C., Chirality
& Bioactivity I.: Pharmacology, Leffingwell Reports,
Vol. 3 (No. 1), May 2003
2. 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
2a. 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
3. Leffingwell, J. C., Saffron
- Aroma from Carotenoids, Leffingwell Reports, Vol. 2,
(No. 5) October 2002
4. Leffingwell, J. C., Carotenoids
as Flavor & Fragrance Precursors , Leffingwell
Reports, Vol. 2, (No. 3) October 2002
5. Leffingwell, J. C., Boronia
- Aroma from Carotenoids, Leffingwell Reports, Vol. 2,
(No. 4) October 2002
6. Leffingwell, J. C., Osmanthus,
Leffingwell Reports, Vol. 2, (No. 2) October 2002
7. Leffingwell, J. C., Tobacco
- Aroma from Carotenoids, Leffingwell Reports, Vol. 2,
(No. 6) October 2002
8. John Leffingwell & E. D. Alford, Volatile
Constituents of Latakia Tobacco, Chemistry Preprint
Archive, Volume 2002, Issue 10, October 2002, Pages
42-54 (User Name: johnleffingwell3 ; Password:
jackl)
9. Leffingwell, J. C., Olfaction
- V, Leffingwell Reports, Vol. 2, (No. 1) May
2002
10. 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
11. Leffingwell, J. C., Olfaction
- A Review, Leffingwell Reports, Vol. 1, (No.1) February,
2001
12. Leffingwell, J. C., Olfaction
- II, Leffingwell Reports, Vol. 1, (No. 4) September,
2001
13. J.C. Leffingwell, Olfaction,
Chemistry Preprint Archive, Volume 2001, Issue 2,
February 2001, Pages 233-256 (User Name:
johnleffingwell3 ; Password: jackl)
14. J.C. Leffingwell, Chemical
constituents of tobacco leaf and differences among
tobacco types. Chemistry Preprint Archive, Volume 2001,
Issue 2, February 2001, Pages 173-232 (User Name:
johnleffingwell3 ; Password: jackl)
15. 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.
16. Leffingwell, J. C. and D. Leffingwell, GRAS
Flavor Chemicals-Detection Thresholds, Perfumer &
Flavorist, 16(1), 1-19 (1991)
17. Leffingwell, J. C. and D. Leffingwell, Chemical
and sensory aspects of tobacco flavor, Rec. Adv. Tob.
Sci., 14, 169-218 (1988)
18. Schiffman S.S., Leffingwell JC., Perception
of odors of simple pyrazines by young and elderly
subjects: a multidimensional analysis., Pharmacol Biochem
Behav., (6):787-98 ( 1981)
19. Leffingwell, J. C., Nitrogen
components of leaf and their relationship to smoking
quality and aroma, Rec. Adv. Tob. Sci., 2, 1-31
(1976)
20. Leffingwell, J.C. & R.E. Shackelford,
Laevo-Menthol
- Syntheses and organoleptic properties, Cosmetics and
Perfumery, 89(6), 69-89, 1974
21. Leffingwell, J. C., et. al., Clary
Sage Production in the Southeastern United States,
International Congress of Essential Oils, San Fransisco,
Sept. 1974
22. Leffingwell, J.C., Alkylation
of bicyclic imines with the Stork-Dowd reagent system, J.
Chem. Soc., Chem. Comm., (1973), pp 299-300
23. 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)
24. Leffingwell, J. C. et al., Tobacco
flavoring for Smoking Products, Winston-Salem N.C.
1972
24a. Leffingwell, J. C., Tobacco
flavoring for Smoking Products II. Tobacco Science, Vol.
18, pp 55-57 (1974)
25. Leffingwell, J.C., A
new procedure for the alkylation of isophorone at the
4-position, Tetrahedron Letters, 1653-1656 (1970)
26. 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)
27. Leffingwell, J.C., The
oxidative coupling of aliphatic aldehydes, ", J. Chem.
Soc., Chem. Comm., (1970), pp 357-58
28. 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
29. E. Royals & Leffingwell, J.C., Reactions
of the Limonene 1,2-Oxides, J. Org. Chem., 31(6), 1937-44
(1966)
30. 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).
31. E. E. Royals & Leffingwell, J.C., Structure
of Ethyl dehydroacetate, J. Org. Chem., 30(4), 1255-56
(1965)
32. E. E. Royals & Leffingwell, J.C., The
absolute configurations of the carvomenthols, J. Am.
Chem. Soc, 10, 2067-68 (1964)
33. Leffingwell, J.C. & E. Royals, alpha-Pinene
Oxide Reaction with Acetic Acid, J. Org. Chem., 29(7),
2098-2099 (1964)
34. J.C. Leffingwell, Verfahren
zur Herstellung dimerer Imine, Swiss Patent No. 540,885
(October 15, 1973).
35. J.C. Leffingwell, Rauchwarenprodukt,
Swiss Patent No. 540,654 (October 15, 1973).
36. J.C. Leffingwell, Verfahren
zur Herstellung dimerer Imine aus monomeren Imenen, Swiss
Patent No. 540,884 (October 15, 1973).
37. J.C. Leffingwell & R.E. Shackelford, Verfahren
zur Herstellung von im Cyclopentylring substituierten
Alkylcyclopentylketonen, Swiss Patent No. 537,351 (July
13, 1973)
38. J.C. Leffingwell, Verfahren
zur Herstellung von Aldehyde-Kupplungs-producten, Swiss
Patent No. 540,870 (October 15, 1973).
39. J.C. Leffingwell, Tobacco
Product, US Patent No. 3,746,010 (Jul 17, 1973)
40. J.C. Leffingwell, Process
for the Preparation of Dimeric Amines and Pyrroles , US
Patent No. 3,709,890 (Jan. 9, 1973)
42. J.C. Leffingwell, Verfahren
zur Herstellung von Aldehyde- oder
KetonKupplungsproducten, Swiss Patent No. 527,782
(October 31, 1972).
43. J.C. Leffingwell, Verfahren
zur Herstellung von Pyrolen, German Patent No. 1,795,618
(April 6, 1972)
44. J.C. Leffingwell, Preparation
of a Terpene Alcohol , US Patent No. 3,676,504 (July 11,
1972)
45. J.C. Leffingwell, Treatment
of 2-Substituted Aldehydes with Lead Dioxide, US Patent
No. 3,658,849 (April 25, 1972)
46. J.C. Leffingwell & R.E. Shackelford, Verfahren
zur Herstellung von 1-Mentheneepoxyd, Swiss Patent No.
519,494 (April 14, 1972).
47. J.C. Leffingwell & R.E. Shackelford, SYNTHESIS
OF ALKYL CYCLOPENTYL KETONES, US Patent No.
3,689,562 (Sept. 5, 1972)
48. J.C. Leffingwell, ISOPHORONE
DERIVATIVES HAVING A NITRILE-CONTAINING SUBSTITUENT IN
THE 4-POSITION, US Patent No. 3,655,720 (April 11,
1972)
49. J.C. Leffingwell, Verfahren
zur Herstellung von Imin- oder Pyrrolverbindungen, German
Patent No. 1,668,625 (July 29, 1971)
50. J.C. Leffingwell, Verfahren
zur Herstellung organischer Verbindungen aus monomeren
Iminen, German Patent No. 1,668,626 (July 29,
1971)
51. J.C. Leffingwell, Tabakproduct,
German Patent No. 2.019,252 (February 11, 1971)
52. J.C. Leffingwell & R.E. Shackelford, Verfahren
zur Herstellung von Alkylcyclopentylketonen, German
Patent No. 2,012,093 (February 25, 1971).
53. J.C. Leffingwell & R.E. Shackelford, Preparation
of Ketones, Great Britain Patent No. 1,240,423 (July 21,
1971).
54. J.C. Leffingwell, Synthesis
of Organic Compounds from Aldehydes, Great Britain Patent
No. 1,246,232 (Sept. 15, 1971).
55. J.C. Leffingwell, Verfahren
zur Herstellung von Isophornderivaten, German Patent No.
2,004,853 (Jan 7, 1971)
56. J.C. Leffingwell, Treatment
of Isophorone, Great Britain Patent No. 1,226,730 (Mar
31, 1971).
57. J.C. Leffingwell, Preparation
of a Terpene Alcohol, US Patent No. 3,609,197 (Sept 28,
1971)
58. J.C. Leffingwell, Verfahren
zur Herstellung von Terpinen-4-ol, Swiss Patent No.
502,286 (March 15, 1971).
59. J.C. Leffingwell, Preparation
of Terpinen-4-ol, Great Britain Patent No. 1,223,241
(Feb. 24, 1971)
60. J.C. Leffingwell, PROCESS
OF COUPLING ALDEHYDES AND KETONES, US Patent No.
3,609,193 (Sept 28, 1971)
61. J.C. Leffingwell, PREPARATION
OF MONOMERIC OR DIMERIC IMINES AND PYRROLES, US
Patent No. 3,598,827 (Aug. 10, 1971)
62. J.C. Leffingwell, Verfahren
zur Herstellung von Dihydrocarvon, Swiss Patent No.
503,681 (April 15, 1971)
63. J.C. Leffingwell & R.E. Shackelford, Epoxidation
Process, Great Britain Patent No. 1,219,040 (Jan. 13,
1971)
64. J.C. Leffingwell & R.E. Shackelford, Trennung
und Umwandlung von isomeren Cyclohexenderivaten, Swiss
Patent No. 510,006 (Aug. 31, 1971)
65. J.C. Leffingwell & R.E. Shackelford, Epoxidation
of 1-Menthene, Great Britain Patent No. 1,226,782 (March
31, 1971)
66. J.C. Leffingwell, Tobacco
Product, US Patent No. 3,625,224 (Dec. 7, 1971)
67. J.C. Leffingwell, Process
for Preparing Aldehyde or Ketone Coupling Products, Great
Britain Patent No. 1,209,493 (October 21, 1970)
68. J.C. Leffingwell, A
Process for Synthesizing Imine or Pyrrole Compounds,
Great Britain Patent No. 1,178,192 (January 21,
1970)
69. J.C. Leffingwell, A
Process for Synthesizing Organic Compounds from Monomeric
Imines, Great Britain Patent No. 1,177,160 (January 7,
1970)
70. J.C. Leffingwell & R.E. Shackelford, Procede
de preparation d'alcoyl cyclopentyl cetones, French
Patent No. 2,037,991 (December 31, 1970).
71. J.C. Leffingwell, Synthese
van alkylcyclopentyketonen, Netherlands Patent No.
7,003,145 (Sept. 15, 1970)
72. 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).
73. J.C. Leffingwell, Derives
de l'isophooone, Belgium Patent No. 745,395 (August 3,
1970)
74. J.C. Leffingwell, Procede
de derives d'isophorone, French Patent No. 2,033,827
(December 4, 1970).
75. J.C. Leffingwell, Werkwijze
voor het bereiden van isophoronderivaten, Netherlands
Patent No. 7,001,497 (Aug. 5, 1970).
76. J.C. Leffingwell, Terpinen-4-ol
und Verfahren zu seiner Herstellung, German Patent No.
1,911,724 (March 19, 1970).
77. J.C. Leffingwell, SYNTHESIS
OF DIHYDROCARVONE, US Patent No. 3,538,164 (Nov 3,
1970)
78. J.C. Leffingwell, Verfahren
zur Herstellung von Dihydrocarvon, German Patent No.
1,814,025 (Feb. 26, 1970)
79. J.C. Leffingwell, Procede
de preparation de Dihydrocarvone, French Patent No.
1,594,462 (July 10, 1970)
80. J.C. Leffingwell, Process
for the Prepation of Dihydrocarvone, Great Britain Patent
No. 1,209,396 (Oct 21, 1970)
81. J.C. Leffingwell & R.E. Shackelford, Epoxydation
von 1-Menthen, German Patent No. 1,957,419 (Dec. 23,
1970)
82. J.C. Leffingwell & R.E. Shackelford, Procede
d'epoxydation de terpenes, French Patent No. 2,023,262
(Aug. 7, 1970)
83. J.C. Leffingwell & R.E. Shackelford, Epoxydering
van 1-menthen, Netherlands Patent No. 6917152 (May 19,
1970)
84. 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)
85. J.C. Leffingwell & R.E. Shackelford, Trennung
und Umwandlung von isomeren Cyclohexenderivaten, German
Patent No. 1,908,274 (July 30, 1970)
86. J.C. Leffingwell & R.E. Shackelford, Verfahren
zur Herstellung von 1-Mentheneepoxyd, Swiss Patent No.
495,350 (Oct 15, 1970).
87. J.C. Leffingwell & R.E. Shackelford, Procede
de preparation d'epoxyde de 1-menthene, French Patent No.
1,591,866 (Aug. 7, 1970)
88. J.C. Leffingwell, Procede
de preparation du terpinen-4-ol, French Patent No.
2,003,498 (Nov 7, 1969).
89. J.C. Leffingwell, Werkwijze
voor het bereiden van Dihydrocarvon, Netherlands Patent
No. 6,900,753 (Aug. 12, 1969).
90. 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)
91. 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)
92. J.C. Leffingwell & R.E. Shackelford, Scheidingswerkvijze,
Netherlands Patent No. 6,902,885 (Aug 28, 1969)
93. J.C. Leffingwell & R.E. Shackelford, Verfahren
zur Herstellung von 1-Mentheneepoxyd, German Patent No.
1,807,324 (Aug 14, 1969).
94. J.C. Leffingwell, Werkwijze
ter bereiden van 1-menthenepoxyde, Netherlands Patent No.
6,818,299 (June 30, 1969).
95. J.C. Leffingwell, Procede
de Preparation d'imines et de pyrolles, Belgium Patent
No. 706726 (May 17, 1968)
96. J.C. Leffingwell, Werkwijze
voor het van imine- of pyrroolverbindigen, Netherlands
Patent No. 6,715,508 (May 20, 1968)
97. J.C. Leffingwell, Procede
de Preparation d'imines dimeres et de pyrolles par
oxidation d'imines monomeres, Belgium Patent No. 706725
(May 17, 1968)
98. J.C. Leffingwell, Werkwijze
voor het bereiden van imineverbindingen, Netherlands
Patent No. 6,715,507 (May 20, 1968)
99. J.C. Leffingwell, Werkwijze
voor het bereiden van terpinen 4-ol, Netherlands Patent
No. 6,903,499 (Sept. 10, 1968).
100. J.C. Leffingwell, SYNTHESIS
OF ALKYL CYCLOPENTYL KETONES, Canadian Patent No.
895916 (March 21, 1972)
101. J.C. Leffingwell, TREATMENT
OF ISOPHORONE, Canadian Patent No. 895899 (March
21, 1972)
102. J.C. Leffingwell, SYNTHESIS
OF ORGANIC COMPOUNDS FROM ALDEHYDES, Canadian
Patent No. 879111 (August 24, 1971)
103. J.C. Leffingwell, SYNTHESIS
OF DIHYDROCARVONE, Canadian Patent No. 866218
(March 16, 1971)
104. J.C. Leffingwell, SYNTHESIS
OF ORGANIC COMPOUNDS FROM ALDEHYDES AND KETONES,
Canadian Patent No. 866199 (March 16, 1971)
105. J.C. Leffingwell, TREATMENT
OF 1,4-DIALKYL-1,2-EPOXYCYCLOHEXANES, Canadian
Patent No. 863968 (February 16, 1971)
106. J.C. Leffingwell & R.E. Shackelford,
EPOXIDATION
PROCESS, Canadian Patent No. 854722 (October 27,
1970)
107. J.C. Leffingwell & R.E. Shackelford,
EPOXIDATION
PROCESS, Canadian Patent No. 854226 (October 20,
1970)
108. J.C. Leffingwell, IMINE
AND PYRROLE SYNTHESIS, Canadian Patent No. 849546
(August 18, 1970)
109. J.C. Leffingwell, PROCESS
FOR PREPARING TERPINENE-4-OL, Canadian Patent No.
844002 (June 9, 1970)
110. J.C. Leffingwell, OXIDATIVE
DIMERIZATION OF IMINES, Canadian Patent No. 820902
(August 19, 1969)
111. J.C. Leffingwell, DERIVES
DE L'ISOPHORONE, Belgium Patent No. 745395 (August
3, 1970)
112. J.C. Leffingwell, Verfahren
zur Herstellung von Isophoronderivaten, German Patent No.
2004853 (January 7, 1971)
Web Articles by J.C. Leffingwell
(1999-2007)
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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