H. Jun et Rj. Angelici, MECHANISM OF THE PLATINUM-PROMOTED CONVERSION OF CL2C=PR TO R-C-EQUIVALENT-TO-P, WHERE R=2,4,6-TRI-TERT-BUTYLPHENYL, Organometallics, 12(11), 1993, pp. 4265-4266
The reaction of Cl2C=PR with Pt(PEt3)4 to give R-C=P and Pt(PEt3)2Cl2
proceeds through intermediates II and III. An X-ray diffraction study
shows that the 2,4,6-tri-tert-butylphenyl ring in III is no longer aro
matic. However, the aromaticity is restored when migration of the R gr
oup from the P to C is completed in forming the R-C=P product.