3-Nitrophenylboronic Acid → HCID 10131376, compound

Participants

Reaction Steps

4,4-Diethyl-6-(3-nitrophenyl)-1,4-dihydrobenzo[d][1,3]oxazin-2-one was prepared, from 4,4-diethyl-6-iodo-1,4-dihydrobenzo[d][1,3]oxazin-2-one and 3-nitrophenyl boronic acid according to the procedure of Example 4, as an off-white solid: mp 193-194° C.; 1H-NMR (CDCl3) δ 9.19 (s, 1H, D2O exchangeable), 8.38 (t, 1H, J=1.9 Hz), 8.20 (m, 1H), 7.83 (m, 1H), 7.61 (t, 1H, J=8.0 Hz), 7.50 (dd, 1H, J=8.2, 2.0 Hz), 7.23 (d, 1H, J=1.7 Hz), 6.99 (d, 1H, J=8.3 Hz), 2.09 (q, 4H, J=7.4 Hz), 0.96 (t, 6H, J=8.3 Hz); MS (EI) m/z 325 ([M−H]−, 100%). Anal. Calcd. For C18H18N2O4.0.3 H2O: C, 65.17; H, 5.65; N, 8.44. Found: C, 65.31; H, 5.60; N, 8.10.

Provenance & Evidence