Key points are not available for this paper at this time.
) (8) compounds are generated. Kinetic data were found to be consistent with unimolecular decay of 3, and 2+1-cycloaddition with radical clocks ruled out a triplet intermediate, consistent with intermediate 1 reacting as a singlet phosphinidene. In addition, both 7 and 8 were shown to reversibly exchange cis-4-octene and bis(trimethylsilyl)acetylene, serving as formal sources of 1, a reactivity manifold traditionally reserved for transition metals.
Courtemanche et al. (Mon,) studied this question.