Title of article :
Synthesis and structure of novel sulfur bridged cyclic di- and tetraalkynes
Author/Authors :
Braverman، نويسنده , , S and Cherkinsky، نويسنده , , M and Birsa، نويسنده , , M.L and Tichman، نويسنده , , S and Goldberg، نويسنده , , I، نويسنده ,
Issue Information :
هفته نامه با شماره پیاپی سال 2001
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.
Keywords :
1 , 4-dithiin , cyclic dipropargylic sulfide , cyclic tetrapropargylic sulfide
Journal title :
Tetrahedron Letters
Journal title :
Tetrahedron Letters
