Structure elucidation of oxidation-reduction products of isolongifolene
摘要:
Three alcohol isomers have been synthesized in high yield from isolongifolene to provide easy-to-make and cheap odorants. Oxidation of isolongifolene by reaction with m-chloroperbenzoic acid yielded a mixture of the corresponding epoxide, ketone, and alcohol. Two other alcohols were obtained from the reduction of the epoxide and the ketone, respectively. An herbal, spicy, and earthy odor was detected from the ketone and alcohols. The structural formulas of the compounds were determined using one-and two-dimensional NMR and gas chromatography-mass spectrometry.
Pd-Catalyzed aerobic oxidation of the sesquiterpene isolongifolene: A green and heterogeneous process
作者:Carla Nunes de Melo、Yuri Blanc Rodrigues、Patrícia Alejandra Robles-Azocar
DOI:10.1016/j.ica.2020.120192
日期:2021.3
Abstract The oxidation of the sesquiterpene isolongifolene, catalyzed by Pd/SiO2 prepared through a conventional sol–gel method, resulted mainly in isolongifolen-9-one (65% selectivity), a compound which occupies a prominent place in perfume industry. In addition to the product obtained from the allylic oxidation of isolongifolene, the formation of other oxygenated products with potential industrial
Krishna, R. R.; Chawla, H. P. S.; Dev, Sukh, Indian Journal of Chemistry - Section B Organic and Medicinal Chemistry, 1984, vol. 23, # 12, p. 1190 - 1196
作者:Krishna, R. R.、Chawla, H. P. S.、Dev, Sukh
DOI:——
日期:——
Nayak, U. R.; Dalavoy, V. S.; Deodhar, V. B., Indian Journal of Chemistry - Section B Organic and Medicinal Chemistry, 1988, vol. 27, # 1-12, p. 891 - 893
作者:Nayak, U. R.、Dalavoy, V. S.、Deodhar, V. B.
DOI:——
日期:——
Structure elucidation of oxidation-reduction products of isolongifolene
作者:Isabelle Bombarda、Jacqueline Smadja、Emile M. Gaydou、Jacques Yves Conan、Robert Faure
DOI:10.1021/jf00037a024
日期:1994.1
Three alcohol isomers have been synthesized in high yield from isolongifolene to provide easy-to-make and cheap odorants. Oxidation of isolongifolene by reaction with m-chloroperbenzoic acid yielded a mixture of the corresponding epoxide, ketone, and alcohol. Two other alcohols were obtained from the reduction of the epoxide and the ketone, respectively. An herbal, spicy, and earthy odor was detected from the ketone and alcohols. The structural formulas of the compounds were determined using one-and two-dimensional NMR and gas chromatography-mass spectrometry.
Synthesis in fluorous phase: a convenient synthesis of isolongifolene epoxide and its rearrangement to ketone
Aerobic epoxidation of isolongifolene 1 with pivalaldehyde/oxygen in perfluoro-2-butyltetrahydrofuran (FC-75) in the presence of Mn(OAc)3·2H2O as catalyst yielded isolongifolene-epoxide 3 in good yield. The rearrangement of isolongifolene-β-epoxide to ketone 4 was achieved.