One-pot synthesis of 3H-1,2-dithiole-3-thione derivatives from dithiolmalonic esters
摘要:
The reaction of dithiolmalonic esters with P,S, S, in boiling xylene and with 2-mercaptobenzothiazole/ZnO as catalyst produces 5-R (R=alkyl or aryl) thio-3H-1,2-dithiole-3-thiones as the major identifiable product. The use of Lawesson's reagent as sulfurizing agent gives even better yields. For instance with R=phenyl the yield rises from 44 to 82%. (C) 2002 Elsevier Science Ltd. All rights reserved.
DOI:
10.1016/s0040-4039(02)00180-6
作为产物:
描述:
丙二酸 、 叔丁基硫醇 在
PPE 作用下,
反应 15.0h,
以92%的产率得到1,3-二硫代丙二酸-S1,S2-叔丁酯
参考文献:
名称:
A Convenient Method for the Preparation of Thiol Esters
Tandem conjugate addition–elimination reaction promoted by chiral pyrrolidinyl sulfonamide (CPS)
作者:Junye Xu、Xiao Fu、Ruijuan Low、Yong-Peng Goh、Zhiyong Jiang、Choon-Hong Tan
DOI:10.1039/b810905m
日期:——
Chiral pyrrolidinyl sulfonamides have been found to promote the conjugate additionâelimination reaction between activated allylic bromides and 1,3-dicarbonyl compounds with high enantioselectivities and the highly functionalised products can be used to generate a variety of interesting enantiomerically pure compounds via simple transformations.
Chiral Bicyclic Guanidine as a Versatile Brønsted Base Catalyst for the Enantioselective Michael Reactions of Dithiomalonates and β-Keto Thioesters
作者:Weiping Ye、Zhiyong Jiang、Yujun Zhao、Serena Li Min Goh、Dasheng Leow、Ying-Teck Soh、Choon-Hong Tan
DOI:10.1002/adsc.200700326
日期:2007.11.5
A chiral bicyclic guanidine was developed as a versatile Brønsted base catalyst for the enantioselective Michael reactions of dithiomalonates and β-keto thioesters using a range of acceptors including maleimides, cyclic enones, furanone and acyclic 1,4-dicarbonylbutenes.
Mechanochemical Assisted Chemoselective and Stereoselective Hydrogen‐Bonding Catalyzed Addition of Dithiomalonates to Enones
作者:Żaneta A. Mała、Mikołaj J. Janicki、Robert W. Góra、Krzysztof A. Konieczny、Rafał Kowalczyk
DOI:10.1002/adsc.202300636
日期:2023.10.13
be active nucleophiles in the stereoselectiveadditions to chalcones, dienones, and en-ynones affording the desired Michael adducts with moderate to good yield and enantioselectivities up to 98%. In contrast, the analogous dibenzyl malonate remained inactive. Bifunctional Cinchona squaramides secured the effective chirality transfer and the selectivity towards Michael adducts of various bisthiomalonates
One-pot synthesis of 3H-1,2-dithiole-3-thione derivatives from dithiolmalonic esters
作者:Mario L Aimar、Jerónimo Kreiker、Rita H de Rossi
DOI:10.1016/s0040-4039(02)00180-6
日期:2002.3
The reaction of dithiolmalonic esters with P,S, S, in boiling xylene and with 2-mercaptobenzothiazole/ZnO as catalyst produces 5-R (R=alkyl or aryl) thio-3H-1,2-dithiole-3-thiones as the major identifiable product. The use of Lawesson's reagent as sulfurizing agent gives even better yields. For instance with R=phenyl the yield rises from 44 to 82%. (C) 2002 Elsevier Science Ltd. All rights reserved.
IMAMOTO, TSUNEO;KODERA, MASAHITO;YOKOYAMA, MASATAKA, SYNTHESIS, BRD, 1982, N 2, 134-136