A novel photochemical reaction of a mixed phosphonium iodonium ylide with phenylacetylene as a route to diphenyl-1λ~5-phosphinoline

摘要

Earlier, we obtained mixed phosphonium iodonium ylides and studied their reactivities. In the present work, a novel photochemical reaction of ylide 1 with phenylacetylene afforded phenyl 1,1,4-triphenyl-1λ~5-phosphin-olin-2-yl ketone (2). The structure of λ~5-phosphinoline 2 was confirmed by NMR spectroscopy and elemental analysis.