4-Hydroxyphenylboronic acid → HCID 178515847, compound

Participants

Reaction Conditions

Reaction Steps

To a flask charged with trans-4-[(8-bromoquinazolin-2-yl)amino]cyclohexanol (1.3 g, 4.035 mmol) was added Pd(PPh3)4 (233 mg, 0.202 mmol), K3PO4.3H2O (2.686 mg, 10.09 mmol), 4-hydroxybenzeneboronic acid (1.113 g, 8.07 mmol) and DMF (16 mL) under argon. The mixture was heated at 80-90° C. under argon overnight, then cooled to room temperature and filtered. The filtrate was concentrated under vacuum and purified by silica gel chromatography (eluted with EA:PE=2:1) to give the title compound as a yellow solid (1 g, 74%). 1 HNMR (DMSO-d6, 400 MHz): δ 9.50 (s, 1H), 9.01 (s, 1H), 7.72-7.61 (m, 3H), 7.31-7.20 (m, 2H), 6.83 (t, 2H, J=7.6 Hz), 4.53 (d, 1H, J=4 Hz), 3.70-3.55 (m, 1H), 3.45-3.36 (m, 1H), 1.99-1.84 (m, 4H), 1.35-1.14 (m, 4H).

Provenance & Evidence