title: X-H (X = C, N, O, P, S) bond activations induced by beta-heterosubstituted zirconaindenes.
abstract: The azazirconacyclopentene-substituted phosphines 3 and 4 have been found to activate the C-H bonds of acetylenic systems, such as methylpropiolate, diphenylphosphinoacetylene and phenylacetylene, or of methylene compounds, such as malonitrile and diethylmalonate, to give complexes 5a-c, 6a and 6b. C-H bond activation also takes place with vinylacetate. Similar reactions with amines, alcohols, enolisable ketones, phenols, phosphonates, thiols and a second-generation SH-terminated dendrimer lead through X-H bond activation (X = N, O, P, S) to new complexes 8a-c, 9, 12 a,b, 13, 14a-c, 15, 16a and 16b. The azazirconacyclopentene-substituted amine 20 reacts to form analogous complexes. Zr-X bonds of these complexes (X = C, N, O, S) can be cleaved with diphenylchlorophosphine to give P-X phosphorus derivatives in high yield.
authors.affiliation: Laboratoire de Chimie de Coordination du CNRS, Toulouse, France. majoral@lcc-toulouse.fr
authors.forename: V
authors.initials: V
authors.lastname: Cadierno
authors.forename: M
authors.initials: M
authors.lastname: Zablocka
authors.forename: B
authors.initials: B
authors.lastname: Donnadieu
authors.forename: A
authors.initials: A
authors.lastname: Igau
authors.forename: J P
authors.initials: JP
authors.lastname: Majoral
authors.forename: A
authors.initials: A
authors.lastname: Skowronska