In the presence of a Lewis acid conjugated carbodiimides smoothly react as 2-azadienes with various dienophiles such as acetylenic compound, enamine, vinyl ether, and aldehyde under mild reaction conditions to give good yields of nitrogen heterocycles as cycloadducts.
在
路易斯酸共轭碳二
亚胺的存在下,在温和的反应条件下,作为 2-氮杂二烯与各种亲双烯体(如炔属化合物、烯胺、
乙烯基醚和醛)顺利反应,得到良好的氮杂环作为环加合物的产率。