61696-82-0

Upstream product

• 6263-90-7 3-Phenyl-4H-indeno<1,2-c>thiophen-4-on 
• 108-86-1 bromobenzene 
• 3152-68-9 1-phenyl-pent-1-en-3-one 
• 87694-24-4 4-Oxo-3-phenyl-4H-indeno<1,2-c>thiophen-1-carbonsaeure-methylester 
• 87694-23-3 4-Oxo-3-phenyl-4H-indeno<1,2-c>thiophen-1-carbonsaeure 
• 857-54-5 dimethyl 3,6-diphenyl-1,4-dithiin-2,5-dicarboxylate 
• 1974-94-3 dimethyl 3,5-diphenylthiophene-2,4-dicarboxylate 
• 87694-19-7 methyl 3,5-diphenyl-4-methoxycarbonyl-2-thiophenecarboxylic acid 

Downstream Products

• 87694-34-6 N-[2-Benzyl-3-methyl-indan-(1Z)-ylidene]-N'-(2,4-dinitro-phenyl)-hydrazine 

Relevant academic research and scientific papers

Sulfur Compounds in Crude Oil, II - 6,11-Dihydrodiindenothiophenes

Ring closures with 3,5-diphenyl-2,4-thiophenedicarboxylic acid and theirderivates 2 have been studied.Ring closure to the indenothiophene system 3 occurs with identical functional groups in the 2- and 4-position at the thiophene ring.The indenothiophene system 4 is the reaction product from methyl 5-chloroformyl-2,4-diphenyl-3-thiophenecarboxylate with the more reactive functional group in the 5-position at the thiophene ring.The indenothiophene 4b is the starting material for 6,11-dihydrodiindenothiophenes 5.The with truxenecontaminated parent compound 5 is also obtained from 3,5-diphenyl-2,4-thiophenedimethanol (2f) with polyphosphoric acid.