Autocatalytic alkyne cycloadditions: evidence for colloidal Pt catalysis.
Treatment of the four-membered platinacycle L2Pt(1,8-naphthalendiyl) (1) or the five-membered platinacycle L2Pt(1,12-triphenylendiyl) with excess PhCCPh at 120-150 degrees C gives the coupling products 1,2-diphenylacenaphthalene or 4,5-diphenylbenzo[e]pyrene and the alkyne complex L2Pt(eta2-PhCCPh). Both reactions show an accelerating rate, which has been traced to catalysis of the reaction by colloidal platinum formed by the reaction of O2 with L2Pt(eta2-PhCCPh).
Begum
Rowshan Ara
RA
Department of Chemistry, University of Missouri, 125 Chemistry Building, Columbia, Missouri 65211, USA.
Chanda
Nripen
N
Ramakrishna
T V V
TV
Sharp
Paul R
PR
D000480:Alkynes / Q000737:chemistry*; D002384:Catalysis; D003102:Colloids / Q000737:chemistry*; D010984:Platinum / Q000737:chemistry*
D000480:Alkynes; D003102:Colloids; D010984:Platinum