ChemInform Abstract: Diastereoselective Intramolecular meta Photocycloaddition of Side‐Chain‐Substituted 5‐(2‐Methoxyphenyl)pent‐1‐enes.

Abstract

1999 photochemistry, radiation chemistry, chemoluminescence photochemistry, radiation chemistry, chemoluminescence O 0160 -054Diastereoselective Intramolecular meta Photocycloaddition of Side-Chain-Substituted 5-(2-Methoxyphenyl)pent-1-enes.-Irradiation of the title pentenes (I) results in preferred formation of endo-configurated linear meta photoadducts. The selectivity is dictated by steric factors, hydrogen bonding does not seem to be important. -(TIMMERMANS, JOHAN L.; WAMELINK, MARC P.; LODDER, GERRIT; CORNELISSE, JAN; Eur. J.