Y. Tobe et al., Vinylidene to alkyne rearrangement to form polyynes: synthesis and photolysis of dialkynylmethylenebicyclo[4.3.1]deca-1,3,5-triene derivatives, TETRAHEDR L, 42(32), 2001, pp. 5485-5488
Dialkynylmethylenebicyclo[4.3.1]deca-1,3,5-triene derivatives were synthesi
zed as precursors to generate dialkynylvinylidenes by extrusion of an aroma
tic fragment, indane. Photolysis of the trienes gave linear polyynes as the
major products produced by rearrangement of the vinylidenes, together with
the isomerization products having a methylenecycloheptatriene moiety. (C)
2001 Elsevier Science Ltd. All rights reserved.