5-Bromo-4-methylthiophene-2-carbonitrile → 5-[4,4-Dimethyl-2-(trifluoromethyl)-1,4-dihydro-2H-3,1-benzoxazin-6-yl]-4-methylthiophene-2-carbonitrile

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Reaction Steps

Prepared according to the coupling procedure for Example 13 from 6-bromo-4,4-dimethyl-2-(trifluoromethyl)-1,4-dihydro-2H-3,1-benzoxazine and 5-bromo-4-methyl-2-thiophene-carbonitrile. A yellowish solid: mp 97-98° C.; 1H-NMR (DMSO-d6) δ 7.82 (s, 1H), 7.26 (d, 1H, J=1.7 Hz), 7.21 (dd, 1H, J=8.1, 2.1 Hz), 7.16 (s, 1H), 6.88 (d, 1H, J=8.1 Hz), 5.40 (m, 1H), 2.27 (s, 3H), 1.56 (s, 3H), 1.55 (s, 3H); MS (ESI) m/z 351 [M−H]−.

Provenance & Evidence