Acetonitrile → HCID 58613334, compound

Participants

Reaction Conditions

Reaction Steps

A microwave reaction vessel was charged with 1.34 g of (2-Chloro-pyridin-4-yl)-hydrazine (7.48 mmol, 1.1 equiv) and 2.00 g of N-cyano-N′-(4-acetamidophenyl)-O-phenylisourea (6.80 mMol, 1 equiv). The solids were dissolved in 40 mL of NMP and 8 mL of DIEA. The sealed vessel was warmed to 220° C. for 6 min via microwave irradiation. Upon cooling, the resulting solution was poured into 200 mL of saturated sodium bicarbonate. The precipitate was collected and washed with 3×100 mL of water. After azeotropic drying (3×50 mL of acetonitrile) the dark yellow solid (2.0 g, 5.80 mMol, 85% yield) was used without further purification. 1H NMR (500 Mhz, DMSO-d6) δ 9.68 (1 H, s), 9.00 (1 H, s), 8.40 (1 H, d), 7.67 (2 H, m), 7.50 (2 H, d), 7.40 (2 H, d), 6.95 (2 H, s), 2.0 (3 H, s) ppm. LCMS: 2.16 minutes/343.95 (M+H).

Provenance & Evidence