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Publikováno v:
Chemische Berichte. 126:1487-1491
A new precursor, 1,3-bis(2-thienylmethylene)1-1H,3H1-thieno-[3,4-c]thiophene(9), for polyarenemethylenes (PAM), which are predicted to be low band gap polymers, is obtained by a Knoevenagel-type condensation of 1H,3H1-thieno[3,4-c]thiophene 2-oxide (