Treatment of titanacyclobutenes I vith two equivalents of dichlorophen
ylphosphine affords diphosphacyclopentenes, two examples of which were
structurally characterized by single-crystal X-ray diffraction analys
is. The analogous reaction of a titanacyclobutene with dichlorophenyls
tibine affords the corresponding distibacyclopentene as well as a stib
acyclobutene. (C) 1996 John Wiley & Sons, Inc.