Imine derivatives conjugated with heteroaromatic ring such as furan, thiophene or pyrrole reacted with naphtho[b]cyclopropene in the presence of silver or ytterbium catalysts. The reactions proceeded via [2π + 2σ] type cycloaddition process to give naphtho[b]dihydropyrrole derivatives. The yields of the cycloadducts were influenced by the heteroaromatic ring, i.e. the furan derivatives gave high yields
在
银或
镱催化剂存在下,与
呋喃、
噻吩或
吡咯等杂芳环共轭的
亚胺衍
生物与
萘并[b]环
丙烯反应。该反应通过[2π + 2σ]型环加成过程进行,得到
萘并[b]二氢
吡咯衍
生物。环加合物的收率受杂芳环的影响,即
呋喃衍
生物收率高,
吡咯衍
生物收率低。还研究了催化剂和溶剂的影响。与杂环醛的类似反应得到
萘并[b]二氢
呋喃衍
生物。此外,与腙衍
生物反应得到开链型加合物。