Specific ortho photocycloaddition of enol ethers to 2-substituted anisoles: Facile synthesis of bicyclo[4.2.0]octa-2,7-dienes in sunlight
作者:Andrew Gilbert、Peter Heath
DOI:10.1016/s0040-4039(01)81088-1
日期:1987.1
Enolethers undergo specific photocycloaddition to anisoles which have electron withdrawing substituents in the 2-position to give good yields of bicyclo[4.2.0]octa-2,7-dienes as the photostable products.
The diverse photocycloaddition reactions of 4-methoxybenzonitrile: novel formation of azacyclo-octatetraenes
作者:Nader Al-Jalal、Michael G. B. Drew、Andrew Gilbert
DOI:10.1039/c39850000085
日期:——
Azacyclo-octatetraenes are formed photochemically from addition of acrylonitrile or benzonitrile to p-methoxybenzonitrile: from the former system ortho-cycloadducts are also produced but irradiation of allyl cyanide or cis-cyclo-octene with p-methoxybenzonitrile yields para- and meta-cycloadducts respectively.