Dimethylformamide → HCID 23156962, compound

Participants

Reaction Steps

A mixture of 4 (740 mg, 2.35 mmol) and Cu(I)CN (423 mg, 4.7 mmol) in dry DMF (25 mL) was refluxed for 48 h. The reaction mixture was poured onto water/ammonia and extracted with methylene chloride. The extract was washed with water and brine, dried over Na2SO4, then passed on silica gel to give analytically pure product 5 in 40% yield, mp 194-195° C. 1H NMR (DMSO-d6); δ 7.17 (d, J=3.6 Hz, 1H), 7.21 (d, J=3.6 Hz, 1H), 7.43 (d, J=3.6 Hz, 1H), 7.76 (d, J=3.6 Hz, 1H), 7.91 (d, J=8.4 Hz, 2H), 7.99 (d, J=8.4 Hz, 2H). 13C NMR (DMSO-d6); δ 152.3, 149.3, 144.3, 133.0, 132.9, 125.6, 124.3, 124.1, 118.7, 112.0, 111.8, 111.5, 110.0, 107.9. EIMS (m/z, rel.int.); 260 (M+, 100), 231 (15), 203 (25), 177 (25), 140 (10), 130 (55). Calcd for C16H8N2O2: C, 73.84; H, 3.09; N, 10.76. Found. C, 73.62; H, 3.18; N, 10.92.

Provenance & Evidence