145779-70-0Relevant academic research and scientific papers
Platinum(0) complexes of cyclic alkynes and allenes from base-induced dehydrohalogenation of bromocycloalkenes
Lu, Zheng,Abboud, Khalil A.,Jones
, p. 1471 - 1474 (2008/10/08)
Treatment of 1-bromocycloheptene or a mixture of 1-, 2-, and 3-bromocycloheptatrienes with t-BuOK in the presence of (Ph3P)3Pt has been confirmed to lead to predominant formation of (Ph3P)2Pt π-complexes of the corresponding cyclic allenes. In contrast, reaction of these same halides and 1-bromocyclohexene with LDA in THF in the presence of (Ph3P)3Pt leads exclusively to (Ph3P)2Pt complexes of the corresponding cyclic akynes. These reactions provide the first metal complexes of cycloheptadienynes and a convenient alternate method for the preparation of Pt(O) complexes of cyclohexyne and cycloheptyne. The mechanism of formation of the complex of 1,2-cycloheptadiene is briefly discussed and an X-ray crystal structure of one of the cyclheptadienyne complexes is reported.
