作者:Kenya Nakata、Tsuyoshi Takeda、Jun Mihara、Tetsuya Hamada,、Ryo Irie、Tsutomu Katsuki
DOI:10.1002/1521-3765(20010903)7:17<3776::aid-chem3776>3.0.co;2-m
日期:2001.9.3
(Nitrosyl)(salen)ruthenium(II) complex 1 was found to serve as an efficient catalyst for the epoxidation of conjugated olefins under photoirradiation, with 2,6-dichloropyridine N-oxide (2) or tetramethylpyrazine N,N'-dioxide as a stoichiometric oxidant. High enantioselectivity was achieved irrespective of the substitution pattern of olefins. The choice of solvent depends on stability of the resulting epoxides: high enantioselectivity is generally observed in the reaction with ethereal solvents, but use of benzene is recommended when the resulting epoxides are acid-sensitive.