Phosphorus Pentasulfide: A Mild and Versatile Catalyst/Reagent for the Preparation of Dithiocarboxylic Esters
作者:Arumugam Sudalai、Subbareddy Kanagasabapathy、Brian C. Benicewicz
DOI:10.1021/ol006407q
日期:2000.10.1
The reaction of carboxylic acids (1) with a variety of thiols or alcohols in the presence of phosphorus pentasulfide (P(4)S(10)) as a catalyst and reagent (20-40 mol %) proceeded effectively to afford the corresponding dithiocarboxylic esters (2) in high yields.
Heterobivalent Library Expansion by “Living Radical” Processes: Thiocarbonyl Addition/Elimination, and Nitroxide-Based Reactions with Fluorous Deconvolution
作者:David Crich、Daniel Grant、Albert A. Bowers
DOI:10.1021/ja0756321
日期:2007.10.1
Degenerate radical addition fragmentation and nitroxide fragmentation reactions are applied to the expansion of heterobivalent libraries without contamination from homobivalent species. Deconvolution by means of a fluorous tagging process is described.
US6458968B2
申请人:——
公开号:US6458968B2
公开(公告)日:2002-10-01
Facile Conversion of Dithioesters
into Carboxylic Acids or Esters Using Alkaline Hydrogen
Peroxide
作者:Fabienne Grellepois、Charles Portella
DOI:10.1055/s-0028-1083190
日期:——
Simple, mild, and environmentally friendly procedures for the directconversion of dithioesters into either carboxylicacids or esters using hydrogen peroxide under alkaline conditions are described.
描述了在碱性条件下使用过氧化氢将二硫酯直接转化为羧酸或酯的简单、温和和环保的程序。
Dithiocarboxylic ester synthetic process
申请人:——
公开号:US20020019554A1
公开(公告)日:2002-02-14
A process the preparation of a dithiocarboxylic esters comprises reacting a carboxylic acid compound of formula R
1
(COOH)
m
, a compound of formula R
2
AH and phosphorus pentasulfide to produce a compound of structure I. An alternate process comprises reacting a
1
compound of formula R
3
(COAH)
m
and a compound of structure II
2
in the presence of a clay catalyst; and treating products of the reaction with a thiating agent to produce a compound of structure III, a compound of structure IV, or a combination of compounds of structure III and structure IV.
3