Triethylamine → HCID 53935469, compound

Participants

Reaction Steps

To a solution of 2-[2-isopropyl-4-(3-carboxyacryloyl)phenoxymethylcarbonylamino]benzothiazole (1.0 g) and triethylamine (0.4 ml) in dichloromethane (20 ml) is added dropwise isobutyl chloroformate (0.32 ml) under ice-cooling. To the mixture is added N-methylpiperazine (0.27 ml) at the same temperature, and the mixture is stirred for 2.5 hours. The reaction solution is washed with water, dried and concentrated under reduced pressure. The residue is purified by silica gel column chromatography (solvent; dichloromethane→dichloromethane:methanol=30:1), and recrystallized from ethanol to give 2-{2-isopropyl-4-[3-(4-methyl-1-piperazinylcarbonyl)acryloyl]phenoxymethylcarbonylamino}benzothiazole (0.80 g).

Provenance & Evidence