Tetrahedron Letters

Perchlorotolane. A new synthesis and its thermal dimerization

M Ballester, J Castañer, J Riera, O Armet

Index: Ballester, M.; Castaner, J.; Riera, J.; Armet, O. Tetrahedron Letters, 1980 , vol. 21, p. 2845 - 2848

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Abstract

Bd A new synthesis of perchlorotolane (perchlorodiphenylacetylene; I) is It dimerizes at high temperature to give perchloro-1,2,3-triohenvl- ~a~ht~le~e (III)and perchloro-2.3.8-trip~nylbenzofulvene (IV). Under the sa- me conditions the latter yields perchloeiphenylidene(2,1_a)indene ... Accordingly, pevchlorophenylacetyle~a is a reactive chlorocarbon performing ... 2b4 for example, it undergoes an easy ... &-perchlorostilb (III5 eliminates chLorine with copper ...