Synthesis of hindered spiro-oxindoles by photolysis of 1-(1-alkenyl)benzotriazoles
作者:Jonathan K. Dutton、David P.M. Pleynet、A.Peter Johnson
DOI:10.1016/s0040-4020(99)00691-2
日期:1999.10
Photolysis of 1-(1-alkoxy-1-alkenyl)benzotriazoles gives moderate yields of 2-alkoxy-indolenines, which can be hydrolysed to oxindoles. A side reaction leads to the formation of imino-oxetanes. The formation of the 2-alkoxy-indolenines is quite insensitive to steric hindrance at the reacting centres.