Lawesson's reagent → 5-(4,4-dimethyl-2-thioxo-1,4-dihydro-2H-3,1-benzoxazin-6-yl)-1-ethyl-1H-pyrrole-2-carbonitrile

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Reaction Steps

The title compound was prepared according to the procedure for Example 16 from 5-(4,4-dimethyl-2-oxo-1,4-dihydro-2H-3,1-benzoxazin-6-yl)-1-ethyl-1H-pyrrole-2-carbonitrile and Lawesson's reagent. The product was obtained in the form of white needles: mp 212-213° C.; 1H-NMR (DMSO-d6) δ 1.25 (t, 3H, J=7 Hz), 1.68 (s, 6H), 4.07 (q, J=7 Hz, 2H), 6.32 (d, J=3.9 Hz, 1H), 7.07 (d, J=3.9 Hz, 1H), 7.15 (d, J=9 Hz, 1H), 7.42 (m, 2H), 12.33 (s, 1H); MS (ESI) m/z 310 (M−H)−.

Provenance & Evidence