Premium
A Novel Chemoentrapment Approach for Supportless Recycling of a Catalyst: Catalytic Asymmetric Dihydroxylation
Author(s) -
Lee Daewon,
Lee Honggeun,
Kim Seyoung,
Yeom ChangEun,
Kim B. Moon
Publication year - 2006
Publication title -
advanced synthesis and catalysis
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.541
H-Index - 155
eISSN - 1615-4169
pISSN - 1615-4150
DOI - 10.1002/adsc.200505351
Subject(s) - chemistry , dihydroxylation , catalysis , osmium , organic chemistry , aqueous solution , ether , enantioselective synthesis , vinyl ether , combinatorial chemistry , ruthenium , polymer , copolymer
A simple method of recycling a metal catalyst through chemoentrapment in an aqueous layer using ethyl vinyl ether has been developed. Using this new methodology, a highly efficient, filtration‐free recycling of osmium for catalytic asymmetric dihydroxylation was accomplished. By means of the formation of a water‐soluble OsO 4 2− using EVE, AD reactions of mono‐ and disubstituted olefins with 1 mol % of OsO 4 proceeded for up to 9 cycles without any loss of yields and enantioselectivities.