Dimeric chiral Mn(III) Schiff base complex-catalysed enantioselective epoxidation of non-functionalised alkenes

Authors
Kureshy, RI Khan, NUH Abdi, SHR Patel, ST Jasra, RV
Citation
Ri. Kureshy et al., Dimeric chiral Mn(III) Schiff base complex-catalysed enantioselective epoxidation of non-functionalised alkenes, TETRAHEDR L, 42(15), 2001, pp. 2915-2918
Citations number
19
Categorie Soggetti
Chemistry & Analysis","Organic Chemistry/Polymer Science
Journal title
TETRAHEDRON LETTERS
ISSN journal
00404039 → ACNP
Volume
42
Issue
15
Year of publication
2001
Pages
2915 - 2918
Database
ISI
SICI code
0040-4039(20010409)42:15<2915:DCMSBC>2.0.ZU;2-Q
Abstract
Dimeric chiral Mn(III) Schiff base complex 1 has been investigated as a cat alyst for enantioselective epoxidation of chromenes, indene and styrene wit h an objective to explore its efficiency and recycling capability. Excellen t conversions were obtained with all alkenes. More than 99% chiral inductio n, as determined by H-1 NMR using the chiral shift reagent Eu(hfc)(3), was obtained in the case of electron deficient chromenes, viz. nitro and cyano chromene. (C) 2001 Elsevier Science Ltd. Ah rights reserved.