METALLACYCLOBUTENE METALLABUTADIENE (VINYLCARBENE COMPLEX) INTERCONVERSIONS - RING-OPENING OF TITANACYCLOBUTENES

Authors
DOXSEE KM JULIETTE JJJ MOUSER JKM ZIENTARA K
Citation
Km. Doxsee et al., METALLACYCLOBUTENE METALLABUTADIENE (VINYLCARBENE COMPLEX) INTERCONVERSIONS - RING-OPENING OF TITANACYCLOBUTENES, Organometallics, 12(12), 1993, pp. 4742-4744
Citations number
21
Categorie Soggetti
Chemistry Inorganic & Nuclear","Chemistry Inorganic & Nuclear
Journal title
Organometallics → ACNP
ISSN journal
02767333
Volume
12
Issue
12
Year of publication
1993
Pages
4742 - 4744
Database
ISI
SICI code
0276-7333(1993)12:12<4742:MM(CI>2.0.ZU;2-P
Abstract
Preparation of titanacyclobutenes bearing vinyl substituents on the al pha-position of the metallacyclobutene ring is reported. Ring opening of such titanacyclobutenes is anticipated to afford divinylcarbene com plexes (or their biradical analogs); reclosure of the titanacyclobuten e ring then can result in either regeneration of the starting complex or in the formation of an isomeric titanacyclobutene. Experimentally, the instantaneous isomerization observed is consistent with rapid, rev ersible ring opening.