Synthesis of 5-thioxo-6H-imidazo[1,2-c]quinazolines and related compounds based on cyclocondensations of 2-isothiocyanatobenzonitrile (ITCB) with α-aminoketones
作者:Anja Bodtke、Wolf-Diethard Pfeiffer、Helmar Görls、Horst Dollinger、Peter Langer
DOI:10.1016/j.tet.2007.08.090
日期:2007.11
5-thioxo-6H-imidazo[1,2-c]quinazolines and 5-oxo-6H-imidazo[1,2-c]quinazolines were prepared by sequential reactions of α-aminoketones with 2-isothiocyanatobenzonitrile (ITCB) and 2-isocyanatobenzonitrile (ICB), respectively. The functionalization of the thioxo moiety allowed the synthesis of 5-amino-6H-imidazo[1,2-c]quinazolines and of 1,2,4-triazolo[4,3-a]-imidazo[1,2-c]quinazolines.
通过α-氨基酮与2-异硫氰酸根合苄腈(ITCB)的顺序反应制备药理学上相关的5-thioxo-6 H-咪唑并[1,2- c ]喹唑啉和5-oxo-6 H-咪唑并[1,2- c ]喹唑啉)和2-异氰酸根合苄腈(ICB)。thioxo部分的功能化可以合成5-氨基-6 H-咪唑并[1,2- c ]喹唑啉和1,2,4-三唑并[4,3- a ]-咪唑并[1,2- c ]喹唑啉。