92802-27-2

Upstream product

• 2461-80-5 diphenacyl sulfide 
• 121561-08-8 thiophenacyl 2-phenyl-2-mercaptovinyl sulfide 
• 536-74-3 phenylacetylene 
• 189362-71-8 1,1-dimercapto-1-phenyl-2-chloroethane 

Downstream Products

• 1445-78-9 2,5-Diphenyl-thiophene 
• 16939-13-2 3,4-diphenylthiophene 
• 111564-12-6 2,6-diphenyl-1,4-dithiine-1,1,4,4-tetraoxide 
• 101306-13-2 2,5-Diphenyl-thiophene-3-thiol 
• 101306-12-1 C₃₂H₂₂S₄ 
• 7111-79-7 [1,1';2'1'']terphenyl-4',5'-dicarboxylic acid dimethyl ester 

Relevant academic research and scientific papers

X-Ray crystallographic analysis and differential scanning calorimetry of two polymorphic forms of 2,6-Diphenyl-1,4-dithiin

2,6-Diphenyl-1,4-dithiin 2 exists in the two polymorphic forms. The dithiin 2L, mp 62-63°C, was assigned as the metastable form, while the dithiin 2H, mp 79-80°C, was assigned as the stable form, mainly on the basis of differential scanning calorimetry (D

Development of a synthesis of diphenylthiophenes via a one-pot reaction of phenylacetylene and sulfur

The one-pot synthesis of a mixture of diphenylthiophenes 1 and 2 from the reaction of phenylacetylene and sulfur under various reaction conditions was studied. Potential intermediates and a reaction pathway are postulated. Copyright Taylor & Francis Inc.

REACTIONS OF ELEMENTAL SULFUR AND SELENIUM WITH SOME ACETYLENIC COMPOUNDS. FORMATION OF THIOPHENES AND SELENOPHENES

The reaction of 3-butyn-2-one with elemental sulfur at 205-215 deg C in benzene in a stainless autoclave afforded 2,4- and 2,5-diacetylthiophenes in 43percent and 22percent yields, respectively. Under similar conditions, the reaction with elemental selenium gave 2,4- and 2,5-diacetylselenophenes in 32percent and 29percent yields, respectively. Diphenylacetylene reacted with sulfur and selenium to produce tetraphenylthiophene (78percent) and tetraphenylselenophene (38percent), respectively. The reaction of di(2-thienyl)acetylene with sulfur provided tetra(2-thienyl)thiophene in 57percent yield. The reactionof dimethyl acetylenedicarboxylate with sulfur in the presence of diphenylacetylene afforded 2,3-bis(methoxycarbonyl)-4,5-diphenylthiophene (29percent) and tetrakis(methoxycarbonyl)thiophene (15percent). On the basis of these results, the mechanism for the formation of thiophenes and selenophenes is discussed.

GENERAL SYNTHESIS OF 1,4-DITHIINS FROM DIKETO SULFIDES

A variety of 1,4-dithiins are prepared in good yields by treatment of diketo sulfides (readily obtainable from α-haloketones and sodium sulfide) with phosphorus pentasulfide or Lawesson's reagent.