Spiro heterocyclization of 4-aryl-4-oxobutane-1,1,2,2-tetracarbonitriles to 3H-pyrrole derivatives, 2-oxa-7-azaspiro[4.4]nona-3,6,8-trienes
摘要:
4-Aryl-3-methyl-4-oxobutane-1,1,2,2-tetracarbonitriles reacted with morpholine to give 8-amino-3-aryl-1-imino-4-methyl-6-(morpholin-4-yl)-2-oxa-7-azaspiro[4.4]nona-3,6,8-triene-9-carbonitriles.
Spiro heterocyclization of 4-aryl-4-oxobutane-1,1,2,2-tetracarbonitriles to 3H-pyrrole derivatives, 2-oxa-7-azaspiro[4.4]nona-3,6,8-trienes
作者:M. Yu. Belikov、O. V. Ershov、I. V. Lipovskaya、S. V. Fedoseev、O. E. Nasakin
DOI:10.1134/s1070428013060110
日期:2013.6
4-Aryl-3-methyl-4-oxobutane-1,1,2,2-tetracarbonitriles reacted with morpholine to give 8-amino-3-aryl-1-imino-4-methyl-6-(morpholin-4-yl)-2-oxa-7-azaspiro[4.4]nona-3,6,8-triene-9-carbonitriles.
Synthesis of new 3H-pyrrole derivatives from 3-aryl-2-oxa-7-azaspiro[4.4]nona-3,6,8-trienes
作者:M. Yu. Belikov、I. V. Belikova、O. V. Ershov、S. V. Fedoseev、O. E. Nasakin
DOI:10.1134/s1070428016090104
日期:2016.9
piro[4.4]nona-3,6,8-triene-9-carbonitriles reacted with acetic anhydride to give different products, depending on the solvent. The reaction in tetrahydrofuran gave the corresponding N-acyl derivatives at the imino group, whereas in pyridine 5-amino-2-morpholin-4-yl-3-(1-aryl-1-oxopropan-2-yl)-3H-pyrrole-3,4-dicarbonitriles were formed as a result of opening of the furan ring.