Specific intramolecular ortho photocycloaddition of substituted 4-phenoxybut-1-enes
作者:Kevin B. Cosstick、Michael G. B. Drew、Andrew Gillbert
DOI:10.1039/c39870001867
日期:——
Cyano and methoxycarbonyl substituted4-phenoxybut-1-enes undergo specific intramolecularortho photocycloaddition: the primary photoadducts are thermally labile and yield cyclo-octatrienes which give bicyclo[4.2.0]octa-2,7-dienes in a facile secondary photoreaction.