(−)-β-Caryophyllene (1) adopts three conformations in solution: αα(48%), βα(28%), and ββ(24%). The conformations were identified by an analysis of the 13C- and 1H-NMR spectra at −87.2 and −153.8° in connection with APT, HETCOR, and COSY spectra, and subsequent NOESY experiments. The activation parameters of the conversion αα βα were determined from a bandshape analysis of exchange-broadened 13C-NMR
Despite their apparent importance, the limited number of commercial standards has hindered their study and precise quantification. Herein, we report the syntheses of fourteen labelled sesquiterpenes with a high level of deuterium incorporation (>95%) for applications in MS-based studies.
[EN] PROCESS FOR PREPARING 1-[(1R,4R/S,8S)-10,10-DIMETHYL-7-METHYLENE-4-BICYCLO[6.2.0]DECANYL]ETHANONE<br/>[FR] PROCÉDÉ DE PRÉPARATION DE 1-[(1R,4R/S,8S)-10,10-DIMÉTHYL-7-MÉTHYLÈNE-4-BICYCLO[6.2.0]DÉCANYL]ÉTHANONE
申请人:BASF SE
公开号:WO2016097239A1
公开(公告)日:2016-06-23
The present invention relates to a process for preparing 1-[(1R,4R/S,8S)-10,10-dimethyl-7-methylene-4-bicyclo[6.2.0]decanyl]ethanone.
[EN] 1-(7,10,10-TRIMETHYL-4-BICYCLO(6.2.0)DECANYL)ETHANONE AS NOVEL AROMA CHEMICAL<br/>[FR] 1-(7,10,10-TRIMÉTHYL-4-BICYCLO(6.2.0)DÉCANYL)ÉTHANONE COMME NOUVEL AGENT CHIMIQUE AROMATIQUE
申请人:BASF SE
公开号:WO2016097238A1
公开(公告)日:2016-06-23
The present invention relates to -(7,10,10-trimethyl-4-bicyclo[6.2.0]decanyl)ethanone, the use of 1-(7,10,10-trimethyl-4-bicyclo[6.2.0]decanyl)ethanone as a fragrance or as flavor, to a method for imparting or modifying a scent or a flavor to a composition by including said compound into such composition, to a fragrance containing composition and/or a fragrance material containing said compound and to a process for preparing 1-(7,10,10-trimethyl-4-bicyclo[6.2.0]decanyl)ethanone.
Synthesis and oxidation of sulfides based on (–)-caryophyllene oxide and tert-butanethiol
作者:J. W. Gyrdymova、E. S. Izmest´ev、S. A. Rubtsova、A. V. Kutchin
DOI:10.1007/s11172-016-1441-9
日期:2016.5
An acid-catalyzed reaction of (–)-caryophyllene oxide with tert-butanethiol led to sulfides with the clovane structure of the sesquiterpene fragment in up to 63% yields. The oxidation of these sulfides gave sulfoxides in up to 38% yields (de 59%) and sulfones in up to 89%.