在三乙胺的存在下,室温下丙二腈与硫化氢和醛的缩合,得到4-烷基(芳基,杂芳基)-2,6-二氨基-3,5-二氰基-4 H-硫代吡喃。后者在DMF中用碱原位处理,然后添加烷基化剂,导致形成4-烷基(芳基,杂芳基)-2-烷氧基羰基(芳酰基,氨基甲酰基)-3,6-二氨基-5-基氰基噻吩并[2,3- b ]-吡啶。
在三乙胺的存在下,室温下丙二腈与硫化氢和醛的缩合,得到4-烷基(芳基,杂芳基)-2,6-二氨基-3,5-二氰基-4 H-硫代吡喃。后者在DMF中用碱原位处理,然后添加烷基化剂,导致形成4-烷基(芳基,杂芳基)-2-烷氧基羰基(芳酰基,氨基甲酰基)-3,6-二氨基-5-基氰基噻吩并[2,3- b ]-吡啶。
Heterocycles Synthesis through Reactions of Nucleophiles with Acrylonitriles. 7. A Novel and Facile One-Step Synthesis of 4<i>H</i>-Thiopyrans
作者:Fathy Fahim Abdel-Latif
DOI:10.1246/bcsj.62.3768
日期:1989.11
Several new 4H-thiopyrans were synthesized via a facile one-step method. Structures and reaction mechanisms are also reported and supported by another synthetic routes.
Nanomagnetic NH
<sub>2</sub>
·MIL-101(Fe)/ED as a new highly efficient catalyst for the synthesis of thiopyran and oxospiro-indolinethiopyran derivatives
In this publication, we reported an efficient MOF-based catalytic system for the synthesis of thiopyran and oxospiro-indolinethiopyran derivatives. For the first time, magnetic NH2.MIL-101(Fe)/ED w...
Three-component synthesis of nicotinamide derivatives based on cross-recyclization of 2,6-diamino-4-aryl-3,5-dicyano-4H-thiopyrans with acetoacetanilide and alkylating reagents
作者:V. D. Dyachenko、T. A. Ryl’skaya、I. V. Dyachenko、I. N. Kalashnik、A. V. Chernykh
DOI:10.1134/s1070363215050114
日期:2015.5
Three-component reaction of 2,6-diamino-4-aryl-3,5-dicyano-4H-thiopyrans, acetoacetanilides, and alkylating reagents proceeds via cross-recyclization of thiopyrans to form 6-alkylthio-4-aryl-N-aryl-2-methyl-5-cyanonicotinamides, 3-imino-6-methyl-2-(4-methoxybenzoyl)-4-(3,4-dimethoxyphenyl)-N-phenyl-2,3-dihydrothieno[2,3-b]pyridine-5-carboxamide, and 3-amino-6-methyl-4-(3,4-dimethoxyphenyl)-2-(4-oxo-4H-pyrido[1,2-a]-pyrimidin-2-yl)-N-phenylthieno[2,3-b]pyridine-5-carboxamide.