CHEMISTRY OF ORGANOSILICON COMPOUNDS .108. EFFICIENT TRAPPING OF SILYLENES THROUGH DISILENE INTERMEDIATES

During the course of the study on disilenes, we have found that variously substituted silylenes (1) can dimerize efficiently to disilenes (2) which are trapped with anthracene. Previously, Margrave and Perry have rationalized results of the reaction of difluorosilylene with acetylene at low temperature in the condensed phase by postulating the existence of tetrafluorodisilene (or diradical), and Conlin and Gaspar3 have shown recently that dimethylsilylene dimerizes in the gas phase at 600-700 °C to give tetramethyldisilene as an intermediate. Existence of the latter has been evidenced from the reaction product identical with the known rearrangement product found previously in the reaction of disilene. © 1979, American Chemical Society. All rights reserved.