Tetrathiafulvalenecarboxylic acids

A different approach to the synthesis of tetrathiafulvalenecarboxylic acid esters involves alkylation of the corresponding cesium salts with alkyl halides. In this way, the methyl ester of 65 (92BSB741) and the benzyl esters of 70 and 71 have been prepared (92MI8) (Scheme 29). These cesium salts have also been made to react with poly(p-chloromethylsty-rene) and related copolymers (89MI5 92MI8). 

As expected, simple methyl esters of tetrathiafulvalenecarboxylic acids afford, upon basic hydrolysis, the free acids (86ZOR2372 92BSB741). This procedure has been applied to the synthesis of molecules containing two TTF moieties (89ZOR1456 93JOC1355) (Scheme 31). A number of... 

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