Publications [#233329] of Andrew T. McPhail

Journal Articles

  1. Dema, AC; Lukehart, CM; McPhail, AT; McPhail, DR, "Evidence for a Bis(alkylidene)silacyclopropane Intermediate in the Platinum-Mediated Formation of a Silacyclobutene", Journal of the American Chemical SocietyJanuary,, 1990, 112(20), 7229-7233, American Chemical Society (ACS) [Gateway.cgi], [doi].
    (last updated on 2026/01/22)

    Abstract:
    When Ph2Si(C≡CCMe3)2 is treated with a cationic Pt-H reagent, a 4-alkylidene-1-silacyclobutenyl ring system is formed. Evidence for the presence of two intermediates in this reaction sequence is obtained by using selective trapping reactions. Acetic acid cleaves at Pt-C bond to give alkenylsilane products, indicating the intermediate formation of a Pt, Si-u-alkenylidene complex. ROH reagents react with a proposed bis(alkylidene)silacyclopropane intermediate to initiate ring opening and to form η3-butadienyl complexes (where R = H, Me, Et, or Ph). The structure of one of these complex ions (R = H) has been confirmed by X-ray crystallography. © 1990, American Chemical Society. All rights reserved.