Diisopropylethylamine → HCID 58355520, compound

Participants

Reaction Steps

1,3-Benzothiazole-2-carboxylic acid (29 mg), tert-butyl (3S,5R)-3-[(2-methylpropyl)amino]-5-(morpholin-4-ylcarbonyl)piperidine-1-carboxylate (50 mg) and N,N-diisopropylethylamine (118 μl) were dissolved in acetonitrile (3 ml), chloro-N,N,N′,N′-tetramethylformamidinium hexafluorophosphate (57 mg) was added at 0° C., and the mixture was stirred at room temperature for 2 hr. The reaction mixture was diluted with 10% aqueous sodium bicarbonate, and the mixture was extracted with ethyl acetate. The extract was washed with saturated brine, and dried over anhydrous sodium sulfate. The solvent was evaporated under reduced pressure. The residue was subjected to silica gel column chromatography, and a fraction eluted with ethyl acetate-hexane (1:1-1:0) was concentrated under reduced pressure to give the object product (58 mg).

Provenance & Evidence