Synthesis of n-(4-hexylbenzoyl) dithieno[3,2-b:2’,3’-d]pyrrole as a new building block toward application in donor – acceptor conjugated polymers

Tóm tắt

A new derivative of bridged bithiophene based N-(4-hexylbenzoyl) dithieno[3,2-b:2’,3’-d]pyrrole (HBDP) has been successfully synthesized from 3,3’-dibromo-2,2’-bithiophene and 4-hexylbenzamide via Ullmann-type C-N coupling amidation using 20 mol% CuI and 40 mol% DMEDA in 24 hours. A conversion of the HBDP monomer has obtained around of 35%. The structure of main product HBDP was characterized via the nuclear magnetic resonance (¹H NMR and ¹³C NMR) and fourier transform infrared (FT-IR). The HBDP monomers will be used as potential moieties for direct arylation polycondensation to synthesize the donor-acceptor conjugated polymers.