Selenium heterocycles. XV. Reaction of 2-aminoselenazoles and 2-amino-1,3,4-selenadiazoles with acetylenic compounds
作者:A. Shafiee、I. Lalezari
DOI:10.1002/jhet.5570120413
日期:1975.8
2-Aminoselenazoles with ethyl propiolate or dimethyl acetylenedicarboxylate gave 7H-selenazolo[3,2-a]pyrimidin-7-ones. 2-Amino-1,3,4-selenadiazoles with dimethyl acetylenedicarboxylate gave 7H-1,3,4-selenadiazolo[3,2-a]pyrimidin-7-ones; with ethyl propiolate the reaction took an unusual path and 2-carbethoxy-5H-selenazolo[3,2-a]pyrimidin-5-one was isolated. The assignment of the structures were supported
用丙酸乙酯或乙炔二甲酸二甲酯的2-氨基硒唑得到7 H-硒代氮杂[3,2 - a ]嘧啶-7-酮。2-氨基-1,3,4-硒代二唑与乙酰二羧酸二甲酯得到7 H -1,3,4-硒代重氮[3,2 - a ]嘧啶-7-;用丙酸乙酯反应时,反应路线不寻常,分离出2-甲乙氧基-5 H-硒代苯并[3,2 - a ]嘧啶-5-酮。光谱分析支持结构的分配。