Partially a-brominated derivatives of tetra-2-thienylmethane (Br-n-TTM; n = 1-3) were synthesized and isolated in gram quantities. An alternative and more selective preparation of Br-3-TTM was also developed. A new pi-electron system based on the tetra-2-thienylmethane framework was synthesized from the monobromo derivative of tetra-2-thienylmethane.
(5-Acetyl-2-thienyl)(5-benzoyl-2-thienyl)(5-bromo-2-thienyl)(5-cyano-2-thienyl)methane has been synthesized as the first chiral tetrakis(2-thienyl)methane derivative. This compound can be resolved ...