Direct UV observation and kinetic studies of a alpha-alkoxy benzyloxy radical.
A alpha-alkoxy benzyloxy radical 3 was generated by laser flash photolysis of peroxyacetal 2, and its UV spectrum, decomposition pattern, reactivity with PPh(3), O(2), and i-PrOH, and quantum yield were explored. It was found that the radical 3 is very unstable and highly reactive and performs beta-C-H scission much faster than beta-C-O scission and H-abstraction.
Chen
Lu-An
LA
Department of Chemistry, National Cheng Kung University, Tainan, Taiwan.
Sung
Kuangsen
K