Benzenesulfonyl chloride → 4-Benzenesulfonylamino-3-methyl-benzofuran-2-carboxylic acid ethyl ester

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Reaction Steps

4-Benzenesulfonylamino-3-methyl-benzofuran-2-carboxylic acid ethyl ester was prepared from 4-amino-3-methyl-benzofuran-2-carboxylic acid ethyl ester (Example 60, Step 1), and benzenesulfonyl chloride according to the procedure of Example 68, Step 1. Yield: 83%. 1H NMR (400 MHz, DMSO-d6) δ ppm 1.3 (t, J=7.2 Hz, 3 H) 2.6 (s, 3 H) 4.4 (q, J=7.1 Hz, 2 H) 6.6 (d, J=7.8 Hz, 1 H) 7.3 (m, 1 H) 7.6 (t, J=7.8 Hz, 3 H) 7.7 (m, 3 H) 10.1 (s, 1 H).

Provenance & Evidence