SYNTHESIS OF NEW CHIRAL TETRADENTATE SULFONAMIDE BASED LIGANDS

Authors
HO DE BETANCORT JM WOODMANSEE DH LARTER ML WALSH PJ
Citation
De. Ho et al., SYNTHESIS OF NEW CHIRAL TETRADENTATE SULFONAMIDE BASED LIGANDS, Tetrahedron letters, 38(22), 1997, pp. 3867-3870
Citations number
27
Categorie Soggetti
Chemistry Inorganic & Nuclear
Journal title
Tetrahedron letters → ACNP
ISSN journal
00404039
Volume
38
Issue
22
Year of publication
1997
Pages
3867 - 3870
Database
ISI
SICI code
0040-4039(1997)38:22<3867:SONCTS>2.0.ZU;2-2
Abstract
A two step procedure for the synthesis of chiral tetradentate sulfonam ide ligands is reported. The ligands are easily prepared from the corr esponding bissulfonamide complexes by directed metallation followed by quenching with either ketones or carbon dioxide in 47 to 82% yield. P reliminary results indicate that these complexes are efficient catalys ts in the asymmetric addition of alkyl groups to aldehydes. (C) 1997 E lsevier Science Ltd.