Hydrochloric Acid → tert-Butyl 4-({[5-[(3,3-dimethylbutanoyl)amino]-1-(2-fluorobenzyl)-1H-indol-2-yl]-carbonyl}amino)phenylcarbamate

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Reaction Steps

50 mg (0.13 mmol) of 5-[(3,3-dimethylbutanoyl)amino]-1-(2-fluorobenzyl)-1H-indole-2-carboxylic acid from Example XXXIX, 37.6 mg (0.20 mmol) of N′-(3-dimethylaminopropyl)-N-ethylcarbodiimide×HCl and 8 mg (0.07 mmol) of 4-dimethylaminopyridine are initially charged in DMF. 32.7 mg (0.16 mmol) of tert-butyl 4-aminophenylcarbamate are added, and the mixture is stirred at RT overnight. For work-up, the mixture is diluted and extracted with aqueous hydrochloric acid and dichloromethane. The organic phase is washed with sat. sodium chloride solution, dried with sodium sulphate, filtered and dried under reduced pressure.

Provenance & Evidence