CRYSTAL STRUCTURE DETERMINATION OF SOME NEW DISUBSTITUTED THIOPHENES

and 2,3-Thienylenediacrylic (1. 4 and 7 respectively) were synthesiz,ed in one step reaction by catalytic vinylation of the corresponding dibromothioplienes in the presence of cyclohexylamine salt of acrylic acid. 2.4-Thienylenediacrylic acid 10 was prepared by catalytic vinylation of 3-(4-bromo-2-thienyl)acryilic acid.