Multicomponent Synthesis of 4-Alkyl(Aryl, Hetaryl)-2-alkoxycarbonyl(aroyl, carbamoyl)- 3,6-diamino-5-cyanothieno[2,3-b]pyridines
作者:I. V. Dyachenko、V. D. Dyachenko、P. V. Dorovatovskii、V. N. Khrustalev、V. G. Nenajdenko
DOI:10.1134/s1070428018100019
日期:2018.10
The condensation of malononitrile with hydrogen sulfide and aldehydes in the presence of triethylamine in ethanol at room temperature afforded 4-alkyl(aryl, hetaryl)-2,6-diamino-3,5-dicyano-4H-thiopyrans. Treatment of the latter in situ with alkali in DMF, followed by addition of an alkylating agent, led to the formation of 4-alkyl(aryl, hetaryl)-2-alkoxycarbonyl(aroyl, carbamoyl)-3,6-diamino-5-cyanothieno[2
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。