Fused polycyclic nitrogen-containing heterocycles 21. Condensation of 4-hydroxy-3,5-diphenyl-2-phenyliminothiazolidine with 5-fluoro-4-morpholino- and 4-(4-methylpiperazino)-1,2-phenylenediamines
作者:V. A. Mamedov、N. A. Zhukova、T. N. Beschastnova、A. A. Balandina、A. T. Gubaidullin、S. K. Kotovskaya、Sh. K. Latypov、Ya. A. Levin、V. N. Charushin
DOI:10.1007/s11172-009-0030-6
日期:2009.1
The condensation of 4-hydroxy-3,5-diphenyl-2-phenyliminothiazolidine with 5-fluoro-4-morpholino- and 5-fluoro-4-(4-methylpiperazino)-1,2-phenylenediamines leads to region-isomeric thiazolo[3,4-a]quinoxalines differing in substituents in positions 7 and 8 of the benzene ring. From the ratio of isomers formed it follows that the mesomeric effect of a fluorine atom in 1,2-phenylenediamines is comparable with the influence of an aminosubstituent.
4-羟基-3,5-二苯基-2-苯基亚氨基噻唑烷与5-氟-4-吗啉基-和5-氟-4-(4-甲基哌嗪基)-1,2-苯二胺缩合产生区域异构噻唑啉[苯环7位和8位取代基不同的3,4-a]喹喔啉。从所形成的异构体的比例可以看出,1,2-苯二胺中氟原子的介观效应与氨基取代基的影响相当。