m-Tolyl isocyanate → HCID 20097139, compound

Participants

Reaction Steps

The procedure is analogous to that described in Example 81, but 0.6 g of 2-(2-amino-N-phenylacetamido)-N-isopropyl-N-phenylacetamide and 0.24 g of 3-methylphenyl isocyanate are used as the starting material. The crude product obtained is purified by chromatography on 30 g of silica (0.065-0.200 mm) contained in a column 1.5 cm in diameter [eluent: dichloromethane/ethyl acetate (80/20 by volume)], collecting 20 cm3 fractions. Fractions 6 to 10 are combined and concentrated to dryness under reduced pressure (2.7 kPa) at 40° C. After recrystallization from diethyl ether, 0.3 g of N-isopropyl 2-{2-[3-(3-methylphenyl)ureido]-N-phenylacetamido}-N-phenylacetamide melting at 170° C is obtained.

Provenance & Evidence