93454-63-8

Upstream product

• 93454-58-1 3-<2(Z)-(benzylsulfinyl)-2-phenylethenyl>-4H-thiochroman-4-one 
• 93454-57-0 3-<2(Z)-(benzylthio)-2-phenylethenyl>-4H-thiochroman-4-one 
• 70660-17-2 Diethyl α-(benzylthio)benzylphosphonate 
• 70940-99-7 3-formyl-4H-1-benzothiopyran-4-one 
• 93454-62-7 2,6-Diphenyl-2H-4-(2-mercaptobenzoyl)thiopyran 1-oxide 

Downstream Products

• 96689-57-5 2,4,10-triphenylbenzothiopyranol<3,4-b>thiopyran 

Relevant academic research and scientific papers

Thiopyranothiopyran Chemistry. 2. Synthesis of 2,4-Diphenyl-4H-benzothiopyranothiopyran-10-one

2,4-Diphenyl-4H-benzothiopyranothiopyran-10-one was synthesized by lithiation of 3--4H-thiochroman-4-one, whose absolute configuration was established by X-ray crystallography.The yellow, insoluble solid obtained from this reaction was assigned the structure 2,6-diphenyl-2H-4-(2-mercaptobenzoyl)thiopyran 1-oxide (11), which, on brief heating with AcOH, yielded the title compound in 87percent yield.Treatment of 11 with 1percent aqueous cupric acetate in methylene chloride gave a new rearranged product, which was identified as 9,11-diphenylbenzo-1,8-dithiaspiro-deca-6,9-dien-4-one.Mechanisms that would account for the formation of both of these compounds are proposed.