Benzo(B)Thiophene-2-Boronic Acid → HCID 20775778, compound

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Reaction Steps

Suzuki coupling of 5-Bromo-3-(toluene-2-sulfonylamino)-thiophene-2-carboxylic acid tert-butyl ester (43 mg, 0.1 mmol) and benzothiophene-2-boronic acid (53.4 mg, 0.3 mmol) was carried out using Pd(PPh3)4 and Na2CO3 (as described in example 2) resulted in 5-Benzo[b]thiophen-2-yl-3-(toluene-2-sulfonylamino)-thiophene-2-carboxylic acid tert-butyl ester (27 mg, 55% yield). 1H NMR (CDCl3, 400 MHz) 9.92 (s, 1H), 8.07 (d, J=7.8 Hz, 1H), 7.79-7.71 (m, 2H), 7.45-7.24 (m, 7H), 2.7 (s, 3H), 1.56 (s, 9H).

Provenance & Evidence