7099-34-5Relevant academic research and scientific papers
Sulfur Compounds in Crude Oil, III - Dihydrodiindenothiophenes
Boberg, Friedrich,Czogalla, Claus-Detlef,Torges, Karl-Franz,Wentrup, Gerhard-Juergen
, p. 1598 - 1607 (2007/10/02)
Syntheses to the dihydrodiindenothiophenes 1 - 3 have been studied. 1-3 were prepared by thermolysis of 8H-indeno-1,2,3-thiadiazole (10) or 4H-indeno-1,2,3-thiadiazole (13) or by reduction of the corresponding diketones 17, 19, and 21 which were obtained by thermolysis of indeno-1,2,3-thiadiazol-8-one (16) or from 2,3-dichloroinden-1-one (23) with Na2S.Mechanisms with analogous intermediates explain the formation of the indenothiophenes. - Another synthesis of indenothiophene-10,11-dione (21) starts from 2,5-diphenyl-3,4-thiophenedicarboxylic acid (29). - 10,11-Dihydrodiindenothiophene (3) is the known sulfurization product of hydrindene, the structure of 3 is corrected.
