Synthesis and structure of novel sulfur bridged cyclic di-and tetraalkynes

S Braverman, M Cherkinsky, ML Birsa, S Tichman…

Index: Braverman, S; Cherkinsky, M; Birsa; Tichman, S; Goldberg, I Tetrahedron Letters, 2001 , vol. 42, # 42 p. 7485 - 7488

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Citation Number: 7

Abstract

Some novel sulfur bridged 13-to 30-membered cyclic di-and tetraalkynes derived from 1, 2-, 1, 3-and 1, 4-dihydroxybenzene and 1, 2-bis (bromomethyl) benzene were synthesized and their structures confirmed by X-ray analysis. The unexpected formation of 2, 6-divinyl-1, 4- dithiin during Na2S/alumina induced cyclization was also observed and the reaction mechanism is discussed.

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