A simple, rapid and efficient protocol for the synthesis of methylthiomethyl esters under Swern oxidation conditions
作者:Sunil B. Jadhav、Usha Ghosh
DOI:10.1016/j.tetlet.2007.02.036
日期:2007.4
A rapid, mild and high yielding method for the synthesis of methylthiomethyl esters is reported from the corresponding aliphatic, aromatic and unsaturated carboxylicacidsunder Swern oxidation conditions using dimethylsulfoxide, oxalylchloride and triethylamine at low temperature.
Fe 2 O 3 -catalyzed Pummerer rearrangement of acyl chlorides and sulfoxides: Facile synthesis of alkylthiomethyl ester
作者:Haotian Xing、Long Chen、Yimin Jia、Zhongxing Jiang、Zhigang Yang
DOI:10.1016/j.tetlet.2017.04.053
日期:2017.6
A simple, effective approach for the Pummererrearrangement of acyl chlorides with sulfoxides by using a low-cost and more abundant Fe catalyst has been described. The alkylthiomethyl ester products were prepared in good to excellent yields for a range of different substrates including asymmetrical sulfoxides and acyl chlorides with a variety of functional groups under mild reaction conditions. The
Mild deprotection of methoxymethyl, methylthiomethyl, methoxyethoxymethyl, and and β-(trimethylsilyl,)ethoxymethyl, esters with magnesium bromide in ether
作者:Sunggak Kim、Young Hee Park、In Seo Kee
DOI:10.1016/0040-4039(91)80699-7
日期:1991.6
MOM, MTM, MEM, and SEM esters are cleanly deprotected under mild conditions by treatment with magnesium bromide in ether at room temperature.
Direct N-functionalization of benzimidazoles and related azaheterocycles has been achieved using readily accessible α-acyloxy sulfides under transition metal-free conditions. In the presence of the base, potassium carbonate, a variety of N-functionalized azaheterocyclic compounds bearing an N-alkyl ester moiety were synthesized from corresponding heterocyclic precursors. The present reaction does not