Straightforward and Highly Efficient Catalyst-Free One-Pot Synthesis of Dithiocarbamates under Solvent-Free Conditions
作者:Najmedin Azizi、Fezzeh Aryanasab、Mohammad R. Saidi
DOI:10.1021/ol0620141
日期:2006.11.9
[Structure: see text] A highlyefficient and simple synthesis of dithiocarbamates is possible based on the one-pot reaction of amines, CS2, and alkyl halides without using a catalyst under solvent-free conditions. The mild reaction conditions, high yields, and broad scope of the reaction illustrate the good synthetic utility of this method. The reaction is a highly atom-economic process for production
Efficient access to S-methyl dithiocarbamates was achieved with sulfonium or sulfoxonium iodide as a methylation reagent. This method is reliable for the synthesis of dithiocarbamates from primary or secondary amines, with sulfoxonium iodide demonstrating more robust methylation capability than sulfonium iodide. Moreover, it also enables facile access to S-trideuteromethyl dithiocarbamates via sulfoxonium
使用锍或碘化亚砜作为甲基化试剂,可以有效地获得S-甲基二硫代氨基甲酸盐。该方法对于从伯胺或仲胺合成二硫代氨基甲酸盐来说是可靠的,碘化亚砜表现出比碘化亚砜更强大的甲基化能力。此外,它还能够通过碘化亚砜和DMSO- d 6之间的亚砜复分解以高产率轻松获得S-三氘代甲基二硫代氨基甲酸酯。
Cyclized Substituted Thioureas II
作者:Ronald E. Orth、James W. Jones
DOI:10.1002/jps.2600510911
日期:1962.9
VERFAHREN ZUR HEMMUNG DER UNERWÜNSCHTEN RADIKALISCHEN POLYMERISATION VON IN EINER FLÜSSIGEN PHASE P BEFINDLICHER ACRYLSÄURE
申请人:BASF SE
公开号:EP2625159A1
公开(公告)日:2013-08-14
PROCESS FOR INHIBITING UNWANTED FREE-RADICAL POLYMERIZATION OF ACRYLIC ACID PRESENT IN A LIQUID PHASE P
申请人:Blum Till
公开号:US20120085969A1
公开(公告)日:2012-04-12
A process for inhibiting unwanted free-radical polymerization of acrylic acid present in a liquid phase P whose acrylic acid content is at least 10% by weight and which, based on the weight of the acrylic acid present therein, additionally comprises at least 100 ppm by weight of propionic acid and at least 100 ppm by weight of glyoxal, in which at least one chemical compound of the element copper is added to the liquid phase P, and the resulting liquid phases P to which a chemical compound of the element copper has been added.