Synthesis of some new tetracyclic heteroaromatic chromans via quinone methide intermediates
作者:Mohinder S. Chauhan、David M. McKinnon
DOI:10.1139/v81-321
日期:1981.7.15
Synthesis of several new tetracyclic heteroaromatic chromans has been achieved through the reaction of various uracil and 1,3-thiazine derivatives with 1,2-naphthoquinone-1-methide. The spirodimer 4 is a better source of naphthoquinone methide than the naphthol derivatives which provide chromans in low yield due to side reactions. The structure and mechanisms of the various products formed are discussed
通过各种尿嘧啶和 1,3-噻嗪衍生物与 1,2-萘醌-1-甲基化物的反应,合成了几种新的四环杂芳族色满。螺二聚体 4 是比萘酚衍生物更好的萘醌甲基化物来源,后者由于副反应而以低产率提供色满。讨论了形成的各种产品的结构和机制。