THE FIRST LEWIS-ACID MEDIATED ASYMMETRIC TORGOV CYCLIZATION

Authors
ENEV VS MOHR J HARRE M NICKISCH K
Citation
Vs. Enev et al., THE FIRST LEWIS-ACID MEDIATED ASYMMETRIC TORGOV CYCLIZATION, Tetrahedron : asymmetry, 9(15), 1998, pp. 2693-2699
Citations number
20
Categorie Soggetti
Chemistry Inorganic & Nuclear","Chemistry Inorganic & Nuclear","Chemistry Physical
Journal title
Tetrahedron : asymmetry → ACNP
ISSN journal
09574166
Volume
9
Issue
15
Year of publication
1998
Pages
2693 - 2699
Database
ISI
SICI code
0957-4166(1998)9:15<2693:TFLMAT>2.0.ZU;2-1
Abstract
The first catalytic enantioselective Torgov cyclisation has been achie ved in 72% yield and up to 70% ee by using a chirally modified Ti comp lex. The new bis-steroidal ligands were found to be clearly superior t o BINOL. (C) 1998 Published by Elsevier Science Ltd. All rights reserv ed.