A versatile cobalt(II)-Schiff base catalyzed oxidation of organic substrates with dioxygen: Scope and mechanism
作者:T Punniyamurthy、Beena Bhatia、M.Madhava Reddy、Golak C Maikap、Javed Iqbal
DOI:10.1016/s0040-4020(97)00432-8
日期:1997.6
Cobalt(II) complex 1a-f derived from Schiff bases act as efficient catalysts during the oxidation of wide range of organicsubstrates(e.g. alkenes, alcohols, benzylic compounds and aliphatic hydrocarbons) with dioxygen in the presence of aliphatic aldehydes or ketones or ketoesters. EPR studies on 1a-f complexes suggest that the aliphatic carbonyl compounds promote the formation of a cobalt(III)-superoxo
Identification and Synthesis of New Volatile Molecules Found in Extracts Obtained from Distinct Parts of Cooked Chicken
作者:Estelle Delort、Alain Velluz、Eric Frérot、Mark Rubin、Alain Jaquier、Simon Linder、Kirk F. Eidman、Brian S. MacDougall
DOI:10.1021/jf2023066
日期:2011.11.9
separately for their volatile composition. In-depth GC/MS analysis of the separate fractions revealed several unknown molecules. Mass spectra interpretation allowed us to identify nine molecules for the first time in chicken, including cyclic aldehydes, cyclic ketones, and new δ-lactones containing an unsaturated linear chain. Identification was confirmed by chemical synthesis followed by comparison
Procédé pour la préparation de 3-oxo-2-pentyl-1-cyclopentène acétates d'alkyle
申请人:FIRMENICH SA
公开号:EP0583564A1
公开(公告)日:1994-02-23
Le procédé consiste en l'isomerisation à l'aide d'un agent acide d'un époxy-ester de formule
dans laquelle R sert à désigner un radical alkyle inférieur C₁-C6, linéaire ou ramifié, et la ligne ondulée définit une liaison C-C de configuration cis ou trans.
该工艺包括将式如下的环氧酯异构化
其中 R 表示线性或支链 C₁-C6 低级烷基,波浪线表示顺式或反式构型的 C-C 键。
A New Synthesis of 2-Hydroxy-3-alkylcyclopent-2-en-1-ones