Potassium Carbonate → HCID 6620889, compound

Participants

Reaction Conditions

Reaction Steps

Polymer 1—poly(iso-butylcarbazole-co-biphenylpyridine). Into a mixture of 36 (0.200 g, 0.281 mmol), 2,6-dibromopyridine (0.067 g, 0.281 mmol), Pd2(dba)3 (6.4 mg, 7.0 μmol), tri(o-tolyl)phosphine (8.6 mg, 28 μmol) and K2CO3 (0.387 g, 2.81 mmol) was added THF (4.2 mL) and H2O (1.4 mL). The reaction mixture was stirred at 85° C. under dark for 48 hours before cooling to room temperature. The aqueous solution was removed with a pipette. The organic phase was diluted with chloroform, and washed with 5% aqueous NaCN solution till no further bleaching occurs. The organic solution was concentrated and precipitated in methanol and then in hexane. The collected solid was subjected to Soxhlet extraction with methanol, hexane and acetone to yield Polymer 1 as a white solid (0.11 g, 69%). 1H NMR (400 MHz, CDCl3, 298 K): δ(ppm) 8.05-8.03 (d, J=8 Hz, 4H), 7.88 (s, 1H), 7.71-7.66 (m, 1H), 7.58-7.57 (m, 2H), 7.36-7.20 (m, 7H), 4.01-3.99 (d, 2H), 2.85-2.81 (t, 4H), 2.76-2.72 (t, 4H), 2.35-2.28 (m, 1H), 2.11-2.02 (m, 4H), 0.95-0.93 (d, 6H). MW=80,100, Mn=21,900.

Provenance & Evidence