3,4-Difluorobenzeneboronic acid → 6-(3,4-difluorophenylamino)-4,4-diethyl-1-methyl-1H-benzo[d][1,3]oxazin-2(4H)-one

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Reaction Steps

Prepared from 6-amino-4,4-diethyl-1-methyl-1,4-dihydro-2H-3,1-benzoxazin-2-one and 3,4-difluorophenylboronic acid according to the coupling procedure described in example 1. 1H NMR (DMSO-d6): δ 8.24 (s, 1H), 7.28 (q, J=9.2 Hz, 1H), 7.11 (dd, J=8.7, 2.4 Hz, 1H), 7.02 (d, J=8.7 Hz, 1H), 6.90 (m, 2H), 6.74 (m, 1H), 3.26 (s, 3H), 1.97 (m, 4H), 0.81 (t, J=7.3 Hz, 6H). MS (ESI) m/z [M+H]+ (347); MS (ESI) m/z [M−H]−(345); Anal. calcd for C19H20F2N2O2: C, 65.88; H, 5.82; N, 8.09. Found: C, 65.30; H, 5.71; N, 7.79.

Provenance & Evidence