A Mitsunobu approach for the synthesis of sulfinate esters by direct nucleophilic substitution of alcohols is described. The salient features of this strategy include neutral and metal‐free conditions for the rapid synthesis of sulfinates in high yields. The present protocol using p‐toluenesulfonylmethyl isocyanide (TosMIC) and the triphenylphosphine (TPP)/diisopropyl azodicarboxylate (DIAD) reagent
Aromatic substitution. XXXVI. Aluminum trichloride and antimony pentafluoride catalyzed Friedel-Crafts alkylation of benzene and toluene with esters and haloesters
作者:George A. Olah、Jun Nishimura
DOI:10.1021/ja00814a035
日期:1974.4
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.
Reaction of alcohols with sodium arenesulfinates could afford either sulfones or sulfinates, and O‐attack of sulfinate anions onto in situ generated carbocation intermediates from alcohols was the previous proposed mechanism in many syntheses of sulfinates. This concept, which is often used consciously or unconsciously, was revised herein by using isotopic labeling experiments and development of an
The isocyanide-induced esterification of sulfinic acids with alcohols or thiophenols access to sulfinates has been developed. Various primary, secondary, and tertiary alcohols could be compatible with the established protocols. Notably, such an isocyanide-induced synthetic strategy presented the advantages of simple operation, good functional group tolerance, and more than 40 examples up to 99% yields