106020-40-0Relevant academic research and scientific papers
CYCLOCONDENSATION OF 3(2H)-BENZOTHIOPHENONE AND OXIDATION PRODUCTS OBTAINED DURING THESE REACTIONS
Bergman, Jan,Egestad, Boerje
, p. 763 - 774 (1986)
The cyclocondensation of 3(2H)-benzothiophenone under acidic conditions has been studied.The symmetrical cyclotrimer tris(benzothieno)benzene was formed and under certain conditions also a rearranged cyclotrimer, tris(benzothieno)benzene.The formation of cyclotrimers was accompanied by oxidative coupling products involving the initially formed dimeric compound, 3-hydroxy-2,3-bibenzothienyl.During several of these reactions, a novel heterocycle, tris(benzothieno)oxepin, was formed.The products were studied by mass spectrometry and fragmentation pathways were determined by a linked scanning technique.
