Formation of Bicyclic Pyrroles and Furans Through an Enone Allene Photocycloaddition and Fragmentation Sequence
作者:Ginger Lutteke、Rana AlHussainy、Pauli J. Wrigstedt、B. T. B. Hue、René de Gelder、Jan H. van Maarseveen、Henk Hiemstra
DOI:10.1002/ejoc.200701017
日期:2008.2
acetonitrile at 300 nm resulted in the clean conversion of the starting materials into a mixture of photoproducts. The major product in all cases was a bicyclic pyrrole or furan fused to an eight membered ring (43–70 % yield). The formation of these products is thought to be a result of a heteroatom-induced fragmentation of the straight adduct (7). This is supported by irradiation of the carbon analogue
研究了丙二烯 15-18、23 和 26 的 [2+2] 光环加成。以 300 nm 辐照这些底物在乙腈中的溶液,导致起始材料完全转化为光产物的混合物。在所有情况下,主要产物是与八元环稠合的双环吡咯或呋喃(产率 43-70%)。这些产物的形成被认为是杂原子诱导的直链加合物断裂的结果 (7)。这是由碳类似物 32 的辐照支持的