HIGHLY DIASTEREOSELECTIVE FORMATION AND STRUCTURAL CHARACTERIZATION OF [2-CYCLOADDUCT FROM THE PHOSPHENIUM COMPLEXES CP(OC)(2)M=PH) (O-TOL)(M=MO, W) AND ISOCYANATES(2])

Authors
MALISCH W HAHNER C GRUN K REISING J GODDARD R KRUGER C
Citation
W. Malisch et al., HIGHLY DIASTEREOSELECTIVE FORMATION AND STRUCTURAL CHARACTERIZATION OF [2-CYCLOADDUCT FROM THE PHOSPHENIUM COMPLEXES CP(OC)(2)M=PH) (O-TOL)(M=MO, W) AND ISOCYANATES(2]), Inorganica Chimica Acta, 244(2), 1996, pp. 147-150
Citations number
8
Categorie Soggetti
Chemistry Inorganic & Nuclear
Journal title
Inorganica Chimica Acta → ACNP
ISSN journal
00201693
Volume
244
Issue
2
Year of publication
1996
Pages
147 - 150
Database
ISI
SICI code
0020-1693(1996)244:2<147:HDFASC>2.0.ZU;2-X
Abstract
[2+2] Cycloaddition of the prostereogenic phosphenium complexes Cp(OC) (2)M=P(o-Tol)Ph (M=Mo (1a), W (1b)) with the isocyanates RNCO (R=Et (2 a), Ph (2b)) leads to the formation of the four-membered phosphametall acycles Cp(OC)(2)M-P(o-tol)(Ph)-C(O)-NR (M=Mo, W; R=Et, Ph) (3a-c) wit h high diastereoselectivity. The X-ray crystal structure of Cp(OC)(2)W -P(o-tol)(Ph)-C(O)-NEt (3b) reveals that the preferred diastereomer is characterized by a syn arrangement of the tolyl ligand and the cyclop entadienyl unit.