Enantioselective epoxidation of olefins catalyzed by new sterically hindered salen-Mn(III) complexes

Authors
Ahn, KH Park, SW Choi, S Kim, HJ Moon, CJ
Citation
Kh. Ahn et al., Enantioselective epoxidation of olefins catalyzed by new sterically hindered salen-Mn(III) complexes, TETRAHEDR L, 42(13), 2001, pp. 2485-2488
Citations number
29
Categorie Soggetti
Chemistry & Analysis","Organic Chemistry/Polymer Science
Journal title
TETRAHEDRON LETTERS
ISSN journal
00404039 → ACNP
Volume
42
Issue
13
Year of publication
2001
Pages
2485 - 2488
Database
ISI
SICI code
0040-4039(20010326)42:13<2485:EEOOCB>2.0.ZU;2-V
Abstract
New, sterically hindered chiral salen-Mn(III) complexes, 5 and 6, were prep ared from an aldehyde derived from BINOL. These substances catalyze efficie nt, enantioselective NaOCl-promoted epoxidations of olefins and enantiosele ctivities as high as 96-99% ee are observed in epoxidations of cis-beta -me thylstyrene and 2,2-dimethylchromene. (C) 2001 Elsevier Science Ltd. All ri ghts reserved.