Potassium benzyltrifluoroboranuide → 3-Benzyl-10-bromo-9-fluoro-5,6-dihydroimidazo[1,2-d][1,4]benzoxazepine-2-carboxamide

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Reaction Steps

10-Bromo-9-fluoro-3-iodo-5,6-dihydroimidazo[1,2-d][1,4]benzoxazepine-2-carboxamide (70 mg) was reacted with potassium benzyltrifluoroborate similar to as described in Example 5 and purified by reverse phase hplc to give 3-benzyl-10-bromo-9-fluoro-5,6-dihydroimidazo[1,2-d][1,4]benzoxazepine-2-carboxamide. This intermediate was reacted with 2-Methyl-3-butyne-ol similar to as described in Procedure E to afford 4.9 mg of 3-benzyl-9-fluoro-10-(3-hydroxy-3-methyl-but-1-ynyl)-5,6-dihydroimidazo[1,2-d][1,4]benzoxazepine-2-carboxamide following reverse phase hplc purification. MS (Q1) 420 (M)+. 1H NMR (400 MHz, CDCl3) δ 8.56 (d, J=8.2 Hz, 1H), 7.28 (d, J=7.1 Hz, 1H), 7.22-7.15 (m, 3H), 6.69 (d, J=9.9 Hz, 1H), 5.46 (s, 1H), 4.59 (s, 2H), 4.31 (dd, J=5.2, 3.1 Hz, 2H), 4.04 (dd, J=5.1, 3.1 Hz, 2H), 1.65 (s, 6H).

Provenance & Evidence