Photosensitized intramolecular cyclization of furan and non-activated alkene: pathway switching by the substituent on the furan ring
作者:Noriyoshi Arai、Koichiro Tanaka、Takeshi Ohkuma
DOI:10.1016/j.tetlet.2009.12.123
日期:2010.3
A photosensitized reaction of furan with a non-activated simple alkene was investigated. Intramolecular Diels–Alder-type cycloaddition reactions between furan and a trisubstituted alkene were found to proceed in high yield in the presence of 9,10-dicyanoanthracene under UV irradiation to afford oxabicyclo[2.2.1]heptane derivatives in high stereoselectivity when the furan was alkyl substituted. On the