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X−H (X=C, N, O, P, S) Bond Activations Induced by β ‐Heterosubstituted Zirconaindenes
Author(s) -
Cadierno Victorio,
Zablocka Maria,
Donnadieu Bruno,
Igau Alain,
Majoral JeanPierre,
Skowronska Aleksandra
Publication year - 2001
Publication title -
chemistry – a european journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.687
H-Index - 242
eISSN - 1521-3765
pISSN - 0947-6539
DOI - 10.1002/1521-3765(20010105)7:1<221::aid-chem221>3.0.co;2-l
Subject(s) - phenylacetylene , chemistry , amine gas treating , yield (engineering) , methylene , medicinal chemistry , phenols , stereochemistry , organic chemistry , catalysis , materials science , metallurgy
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 5 a – c, 6 a and 6 b . 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 8 a – c, 9, 12 a,b, 13, 14 a – c, 15, 16 a and 16 b . 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.