LONG-RANGE ASYMMETRIC INDUCTION BY CONJUGATE ADDITION TO ALKENYLCYCLOHEXADIENYLIRON COMPLEXES

Authors
HUDSON RDA OSBORNE SA ROBERTS E STEPHENSON GR
Citation
Rda. Hudson et al., LONG-RANGE ASYMMETRIC INDUCTION BY CONJUGATE ADDITION TO ALKENYLCYCLOHEXADIENYLIRON COMPLEXES, Tetrahedron letters, 37(50), 1996, pp. 9009-9012
Citations number
15
Categorie Soggetti
Chemistry Inorganic & Nuclear
Journal title
Tetrahedron letters → ACNP
ISSN journal
00404039
Volume
37
Issue
50
Year of publication
1996
Pages
9009 - 9012
Database
ISI
SICI code
0040-4039(1996)37:50<9009:LAIBCA>2.0.ZU;2-W
Abstract
A general method for the preparation of a series of vinyl-substituted tricarbonyl(cyclohexadienyl)iron(1+) salts is described. A novel regio control switch from direct to conjugate addition is observed when stab ilised enolates with differing metal counterions react with these comp lexes. Organocuprates show regio- and stereocontrol. Long range asymme tric induction by the metal control centre is improved from 2:1 to 8:1 by inclusion of a phosphine in place of CO. Copyright (C) 1996 Elsevi er Science Ltd