3-Cyano-4-fluorophenylboronic acid → 5-[(4,4-diethyl-1-methyl-2-oxo-1,4-dihydro-2H-3,1-benzoxazin-6-yl)amino]-2-fluorobenzonitrile

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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-cyano-4-fluorophenylboronic acid according to the coupling procedure described in example 1. 1H NMR (DMSO-d6): δ 8.40 (s, 1H), 7.38 (t, J=8.9 Hz, 1H), 7.27 (m, 2H), 7.14 (dd, J=8.6, 2.3 Hz, 1H), 7.04 (d, J=8.8 Hz, 1H), 6.91 (d, J=2.5 Hz, 1H), 3.27 (s, 3H), 1.98 (m, 4H), 0.81 (t, J=7.4 Hz, 6H); MS (ESI) m/z 354 ([M+H]+); MS (ESI) m/z 352 ([M−H]−); Anal. calcd for C20H20FN3O2: C, 67.97; H, 5.70; N, 11.89. Found: C, 65.58; H, 5.65; N, 11.36.

Provenance & Evidence