Synthesis and crystal structure of polyaryl substituted diene derivatives based on the reduction of diphenylacetylene with lithium naphthalenide

The reduction of diphenylacetylene with lithium naphthalenide produced two kinds of intermediates,1 or 2,depending on the ratio of diphenylacetylene to lithium naphthalenide.A series of polyaryl substituted ethylene/diene derivatives were synthesized by reaction of electrophⅡes with the corresponding intermediates produced in situ.All new compounds were fully characterized,and their single crystal structures were determined.