(4-Methoxyphenyl)boronic acid → HCID 135508068, compound

Participants

Reaction Steps

This compound was prepared from 7-bromo-3,9-dihydroxy-6H-chromeno[4,3-b]quinoline (7) using 4-methoxyphenylboronic acid according to method M. Yellow powder; Yield: 84%; mp 195° C. (dec.); 1H-NMR (400 MHz, DMSOd-6) δ 3.87 (s, 3H), 5.03 (s, 2H), 6.36 (d, J=2.2 Hz, 1H), 6.60 (dd, J=8.5, 2.5 Hz, 1H), 6.73 (d, J=8.6 2.6 Hz, 1H), 7.16 (d, J=8.6 Hz, 2H), 7.24 (dd, J=9.0, 2.6 Hz, 1H), 7.30 (d, J=8.6 Hz, 2H), 7.89 (d, J=9.0 Hz, 1H), 8.15 (d, J=8.6 Hz, 1H), 9.80 (s, 1H), 9.98 (s, 1H); MS (ESI) m/z 370 ([M−H]−), 372 ([M+H]+); HRMS (ESI+) calcd for C23H17NO4 372.1230 ([M+H]+). Found: 372.1226.

Provenance & Evidence