(3-Ethoxy-4-methoxyphenyl)boronic acid → 8-(3-Ethoxy-4-methoxy-phenyl)-1-(1-ethyl-3-methyl-1H-pyrazol-4-yl)-3-methyl-1,3-dihydro-imidazo[4,5-c]quinolin-2-one

Participants

Reaction Steps

The title compound was synthesized in a similar manner as described for Example 1.1 using 8-bromo-1-(1-ethyl-3-methyl-1H-pyrazol-4-yl)-3-methyl-1,3-dihydro-imidazo[4,5-c]quinolin-2-one (Intermediate F, 39 mg, 0.100 mmol) and 3-ethoxy-4-methoxyphenylboronic acid (Combi-Blocks, San Diego, USA, 25.5 mg, 0.130 mmol) to give the title compound as an off-white foam. (HPLC: tR 2.86 min (Method A); M+H=458 MS-ES; 1H-NMR (d6-DMSO, 400 MHz) 8.92 (s, 1H), 8.16 (s, 1H), 8.08-8.01 (m, 1H), 7.93-7.87 (m, 1H), 7.52-7.46 (m, 1H), 7.06-6.96 (m, 3H), 4.20-4.03 (m, 4H), 3.77 (s, 3H), 3.57 (s, 3H), 1.97 (s, 3H), 1.45-1.33 (m, 6H))

Provenance & Evidence