Ethyl bromoacetate → 4H-1,4-Benzoxazine-4-acetic acid, 6-acetyl-2,3-dihydro-3-oxo-, ethyl ester

Participants

Reaction Steps

The compound 23b was synthesized by reacting 22 and 6d following the same protocol described for the synthesis of compound 23a. White solid (0.47 g, 32%). 1H NMR (400 MHz, CDCl3): δ 1.30 (t, J=7.2 Hz, 3H); 2.55 (s, 3H); 4.25 (q, J=7.2 Hz, 2H); 4.70 (s, 2H); 4.74 (s, 2H); 7.05 (dd, J=1.6, 8.4 Hz, 1H); 7.41-7.42 (m, 1H); 7.60-7.63 (m, 1H).

Provenance & Evidence