Aerobic Enantioselective Epoxidation of Unfunctionalized Olefins Catalyzed by Optically Active Salen–Manganese (III) Complexes
Aerobic Enantioselective Epoxidation of Unfunctionalized Olefins Catalyzed by Optically Active Salen–Manganese (III) Complexes
复制标题
光学活性 Salen-锰 (III) 配合物催化非官能化烯烃的有氧对映选择性环氧化反应
DOI:
10.1246/bcsj.67.2248
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发表时间:
1994
影响因子:
4
通讯作者:
T. Mukaiyama
中科院分区:
文献类型:
--
作者:
T. Yamada;K. Imagawa;T. Nagata;T. Mukaiyama
Enantioselective epoxidation of unfunctionalized olefins is achieved by the combined use of molecular oxygen and pivalaldehyde in the presence of a catalytic amount of optically active Mn(III)–salen complexes. N-Alkylimidazoles are effective axial ligands to produce optically active epoxides with high enantioselectivities in the present procedure; that is, 1,2-dihydronaphthalene derivatives and 2,2-dialkyl-2H-chromene derivatives are converted into the corresponding optically active epoxides with 60—92% enantiomeric excess. The key intermediates in the present aerobic epoxidation are also discussed.
影响因子:
5.6
作者:
ZENG, J;FENNA, RE
通讯作者:
FENNA, RE