4792-31-8

Upstream product

• 934-87-2 S-phenyl thioacetate 
• 88-95-9 Phthaloyl dichloride 
• 42797-33-1 1,2-bis(phenyl thioester)benzene 
• 108-98-5 thiophenol 
• 75-15-0 carbon disulfide 
• 7446-70-0 aluminium trichloride 
• 85-44-9 phthalic anhydride 

Downstream Products

• 51287-54-8 3-(phenylsulfanyl)isobenzofuran-1(3H)-one 

Relevant academic research and scientific papers

Synthesis of cyclic polysulfides: Controlled ring-expansion polymerization of cyclic tetrathioester with thiirane

We synthesized cyclic tetrathioesters containing thioester moieties at the o-position (o-CTE) and m-position (m-CTE) of an aromatic skeleton. The reaction of phenoxy propylenesulfide (PPS) with o-CTE and m-CTE was examined using tetrabutylammonium chlorid

Grignard Reactions on Ortho Dicarboxylic Arene Derivatives. Synthesis of 1,3-Dithienylisothianaphthene Compounds

1,3-Dithienylisothianaphthene (10a) is obtained through ring closure of 1,2-dithienoylbenzene (7a). The synthesis of 7a has been accomplished based on a Grignard reaction by adding 2-thiophene-magnesium bromide to 1,2-di(S-(2-pyridinyl)) benzenedithioate (6b) to obtain 7a in a yield of 95%. The use of 6b avoids the formation of the corresponding 3,3-dithienyl-3H-isobenzofuran-1(3H)-one (dithienylphthalide, 8). The same procedure is applied to obtain 1,3-dithienyl-4,5,6,7-tetradeuterioisothianaphthene (10b) and 1,3-dithienyl-4,5,6,7-tetrafluoroisothianaphthene (10c). The synthesis of the 2,3-dithienoylpyridine (12a), 3,4-dithienoylpyridine (12b), and 2,3-dithienoylpyrazine (12c) however fails. The presence of nitrogen in the central ring system influences the result of the Grignard reaction. Possibly the free electron pair of the nitrogen interferes with the formation of a stable six-membered ring intermediate which is essential for the diketone formation.

Electrochemically Induced Rearrangement of S,S-Diaryl Benzene-1,2-dicarbothioates

The electrochemical reduction of some S,S-diarylbenzene-1,2-dicarbothioates (1) in aprotic medium leads to 3,3-bis(arylthio)phthalides (2) in almost quantitative yield.The reaction is an example of an electrochemically induced chemical reaction.SRN1, in which no external nucleophile is needed and for which the required amount of charge is less than 0.1 F mol-1.