Synthesis of optically active 4-hydroxyalk-2-enenitriles; Reaction of optically active 2-(p-chlorophenylsulfinyl)acetonitrile with aldehydes in the presence of piperidine in acetonitrile
Reaction of opticallyactive 2-(p-chlorophenylsulfinyl)acetonitrile ((R)-) with aldehydes, in the presence of piperidine in acetonitrile at r.t., gave opticallyactive 4-hydroxyalk-2-enenitriles in good optical and chemical yields. The absolute configuration of (−)-4-hydroxypent-2-enenitrile, predominantly obtained by the reaction of (R)- with propanal, was determined to be R.
An improvedprocedure of the Sharpless method for the preparation of chiral sulfinates by triphenylphosphine is described. A mixture of sulfonyl chlorides and diacetone-d-glucose or l-menthol in the presence of triethylamine was treated with triphenylphosphine in CH2Cl2 at 0°C to give the sulfinates in good yields.
An efficient and novel method for the synthesis of sulfinate esters under solvent-free conditions
作者:Abdol R. Hajipour、Ali R. Falahati、Arnold E. Ruoho
DOI:10.1016/j.tetlet.2006.02.080
日期:2006.4
The present letter describes a reliable one-stage process for the preparation of sulfinate esters from the corresponding sulfinic acid and alcohols in the presence of N,N'-dicyclohexylcarbodiimide (DCC) under solvent-free conditions. (c) 2006 Elsevier Ltd. All rights reserved.
Rates and equilibria in the interconversion of allylic sulfoxides and sulfenates
作者:Reginald Tang、Kurt Mislow
DOI:10.1021/ja00710a051
日期:1970.4
Hajipour, Abdolreza; Islami, Fereshteh, Indian Journal of Chemistry - Section B Organic and Medicinal Chemistry, 1999, vol. 38, # 4, p. 461 - 462