(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.
MARSALL P. A.; PRAGER R. H., AUSTRAL. J. CHEM., 1979, 32, NO 6, 1261-1271
作者:MARSALL P. A.、 PRAGER R. H.
DOI:——
日期:——
BANKS, H.;ZIFFER, H., J. ORG. CHEM., 1982, 47, N 19, 2743-3747
作者:BANKS, H.、ZIFFER, H.
DOI:——
日期:——
CHATTERJEE, A.;BANERJEE, D.;BANERJEE, B.;MALLIK, R., TETRAHEDRON, 1983, 39, N 18, 2965-2974
作者:CHATTERJEE, A.、BANERJEE, D.、BANERJEE, B.、MALLIK, R.
DOI:——
日期:——
BHATTACHARYA, SUDIN;RAYCHAUDHURI, SWADESH, R.;CHATTERJEE, AMARESHWAR, J. CHEM. RES. SYNOP., 1985, N 4, 120-121