[EN] PROCESS FOR THE PREPARATION OF ENANTIOMERICALLY ENRICHED ESTERS AND ALCOHOLS [FR] PROCEDE D'ELABORATION D'ESTERS ET D'ALCOOLS A ENRICHISSEMENT ENANTIOMERE
Removal of the acyl donor residue allows the use of simple alkyl esters as acyl donors for the dynamic kinetic resolution of secondary alcohols
作者:Gerard K.M. Verzijl、Johannes G. de Vries、Quirinus B. Broxterman
DOI:10.1016/j.tetasy.2005.02.028
日期:2005.5
dynamic kinetic resolution of secondary alcohols using a lipase and a ruthenium catalyst as developed by Bäckvall required some improvements to make it suitable for its use in an industrial process. The use of p-chlorophenyl acetate as acyldonor is not desirable in view of the toxicity of the side product. We herein report that simple alkyl esters can be used as acyldonors if the alcohol or ketone residue
CYCLOHEXYLETHYL CARBOXYLIC ACID ESTER COMPOSITIONS AND METHOD FOR USING THE SAME FOR REDUCING MALODORS
申请人:Payne Richard K.
公开号:US20110014142A1
公开(公告)日:2011-01-20
The present invention pertains to a method of counteracting a malodor by introducing a malodor counteracting effective amount of an enantiomeric compound selected from the group consisting of (1R)-1-cyclohexylethyl butyrate and (1S)-1-cyclohexylethyl acetate.
Cyclohexylethyl carboxylic acid ester compositions and method for using the same for reducing malodors
申请人:International Flavors & Fragrances Inc.
公开号:US07993633B2
公开(公告)日:2011-08-09
The present invention pertains to a method of counteracting a malodor by introducing a malodor counteracting effective amount of an enantiomeric compound selected from the group consisting of (1R)-1-cyclohexylethyl butyrate and (1S)-1-cyclohexylethyl acetate.
Enzyme reactions in apolar solvents. The resolution of branched and unbranched 2-alkanols by porcine pancreatic lipase.
作者:Brian Morgani、Allan C. Oehlschlager、Thomas M. Stokes
DOI:10.1016/s0040-4020(01)96905-4
日期:1991.1
Straight-chain and branched 2-alkanols were subjected to enzyme catalyzed transesterification in organic solvent using porcine pancreatic lipase, high enantioselectivity being generally observed. The method was applied to the synthesis of (R)-(-)-9-hydroxy-(E)-decenoic acid, a component of the queen bee mandibular gland pheromone.
Method of using cyclohexylethyl carboxylic acid esters for reducing malodors