The apple leaf midge and raspberry cane midge pheromones have been found to be acetoxyheptadecenone and acetoxyundecanone, respectively, and uses for the related C9-19 oxoalkyl or oxoalkenyl molecules substituted with a lower alkanoyloxy group are provided, including monitoring population levels of the midge and control of midge populations by disrupting mating patterns.
[EN] COMPOSITION HAVING MOGROSIDE SWEETNESS AND FLAVOR AND PREPARATION METHOD THEREFOR AND APPLICATION THEREOF<br/>[FR] COMPOSITION AYANT LA SAVEUR ET LE GOÛT SUCRÉ DU MOGROSIDE, SON PROCÉDÉ DE PRÉPARATION ET SON APPLICATION<br/>[ZH] 罗汉果苷甜味和风味组合物及其制备方法与应用
Stabilization of long-chain intermediates in solution. Octyl radicals and cations
作者:Aleksandar V. Teodorović、Dalibor M. Badjuk、Nenad Stevanović、Radoslav Z. Pavlović
DOI:10.1016/j.molstruc.2013.02.020
日期:2013.5
The rearrangements of 1-octyl, 1-decyl and 1-tridecyl intermediates obtained from thermal lead(IV) acetate (LTA) decarboxylation of nonanoic, undecanoic and tetradecanoic acid were investigated experimentally through analysis and distribution of the products. The relationships between 1,5-, 1,6- and possibly existing 1,7-homolytic hydrogen transfer in 1-octyl-radical, as well as successive 1,2-hydride shift in corresponding cation have been computed via Monte-Carlo method. Taking into account that ratios of 1,5-/1,6-homolytic rearrangements in 1-octyl- and 1-tridecyl radical are approximately the same, the simulation shows very low involvement of 1,7-hydrogen rearrangement (1,5-/1,6-/1,7-hydrogen rearrangement = 85:31:1) in 1-octyl radical. (C) 2013 Elsevier B.V. All rights reserved.
Tellurium in organic synthesis: the enantioselective synthesis of the pheromone blend components of Mayetiola destructor, Drosophila mulleri and Contarinia pisi
作者:Renan S. Ferrarini、João V. Comasseto、Alcindo A. Dos Santos
DOI:10.1016/j.tetasy.2009.08.003
日期:2009.9
The components of the pheromone blend of Mayetiola destructor, Drosophila mulleri, and Contarinia pisi were synthesized in high enantiomeric excess (99% ee) from a common enantiopure dianion prepared from an enantiopure hydroxytelluride. (C) 2009 Elsevier Ltd. All rights reserved.
Biocatalytic synthesis of (S)-2-tridecanyl acetate and (S)-2-pentadecanyl acetate, aggregation pheromone components ofDrosophila mulleri andD. busckii, by enantioselective hydrolysis with lipase
The two chiral pheromone acetates, (S)-2-tridecanyl acetate and (S)-2-pentadecanyl acetate, were synthesized with an enantiomeric excess (e.e.) of almost 100% by Pseudomonas cepacia lipase-catalyzed hydrolysis of their corresponding racemic acetates in an acetone-water solvent system.