1,1'-Carbonyldiimidazole → HCID 87463850, compound

Participants

Reaction Conditions

Reaction Steps

A mixture of 3-(2,2-difluorobenzo[d][1,3]dioxol-5-yl)-5-methylenethiazolidin-2-imine (Example 115, 0.2 g, 0.74 mmol) and carbonyldiimidazole (0.14 g, 0.92 mmol) in dry acetonitrile (5 mL) was stirred at 70° C. for 16 hours. After cooling down, the mixture was diluted with 150 mL of CH2Cl2 and washed successively with saturated sodium bicarbonate (75 mL), water (75 mL) and brine (75 mL). The organic phase was dried over sodium sulfate, filtered and evaporated under reduced pressure. The residue was chromatographed over silica using 100% CH2Cl2 to CH2Cl2:MeOH 95:5 as mobile phase to give the titled compound. 1H NMR (CD3OD) δ ppm 5.00 (2H), 5.40 (1H), 5.50 (1H), 6.90 (1H), 7.35 (2H), 7.44 (1H), 7.50 (1H), 8.05 (1H); MS (ESI) m/z 365(M+H)+.

Provenance & Evidence