8-bromo-3,4-dihydro-2H-1,4-benzoxazin-3-one → 8-Bromo-3,4-dihydro-2H-1,4-benzoxazine

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Reaction Steps

The title compound was prepared using a procedure analogous to bromo-1a,2,3,7b-tetrahydro-1H-cyclopropa[c]quinoline except that 7-bromo-3,7b-dihydro-1H-cyclopropa[c]quinolin-2(1aH)-one was replaced with 8-bromo-2H-benzo[b][1,4]oxazin-3(4H)-one. LCMS, [M+H]+=214.0. 1H NMR (400 MHz, CDCl3) δ 6.90 (dd, J=7.9, 1.5 Hz, 1H), 6.63 (t, J=7.9 Hz, 1H), 6.53 (dd, J=7.9, 1.5 Hz, 1H), 4.33-4.39 (m, 2H), 3.42-3.48 (m, 2H).

Provenance & Evidence