177544-75-1

Upstream product

• 54995-24-3 disodium 1,3-dithiol-2-thione-4,5-dithiolate 
• 2632-13-5 2-Bromo-4'-methoxyacetophenone 

Downstream Products

• 337533-81-0 5-(4'-methoxyphenyl)-[1,3]dithiolo[4,5-b][1,4]dithiin-2-one 
• 625851-31-2 6-(4'-methoxyphenyl)thieno[2,3-d][1,3]dithiol-2-one 
• 177544-76-2 6-(4-methoxyphenyl)thieno<2,3-d><1,3>-dithiole-2-thione 
• 337533-80-9 5-(4'-methoxyphenyl)-[1,3]dithiolo[4,5-b][1,4]dithiin-2-thione 

Relevant academic research and scientific papers

An unusual reaction of Lawesson's reagent with 1,8-diketones: A synthesis of fused 1,4-dithiins and thiophenes

Reaction of 1,8-diketones 3 with Lawesson's reagent 8 resulted in the formation of five and six-membered rings 5-7, 18, depending on the nature of the substituents. Product 6 is converted in two steps to the unsymmetric 'ET' analogue 20, containing an extra double bond.

An in depth study of the formation of new tetrathiafulvalene derivatives from 1,8-diketones

A detailed study of the reactions of phosphorus pentasulfide and Lawesson's reagent with a series of 4,5-bis(RCOCH 2S)-1,3-dithiole-2-thiones (R=Ph, 4-MeOC6H4, 4-Br C6H4, Me) has been carried out. These reactions lead to fusion of either an unsaturated 1,4-dithiin ring or a thiophene to the dithiole; the former in higher yield, while the latter is a significant product in the reactions with Lawesson's reagent; as well as small amounts of minor products. A mechanistic rationalization of these products is discussed in some detail. The new fused dithioles have been converted to novel series of fused TTF derivatives.