Diisopropylamine → HCID 58823994, compound

Participants

Reaction Steps

560 mg (0.9 mmol) of the carboxylic acid from Example 48A, 2.6 mmol of aluminium chloride, 1.1 mmol of 1-hydroxy-1H-benzotriazole hydrate and 1.1 mmol of N-(3-dimethylaminopropyl)-N′-ethylcarbodiimide are suspended in DMF. 2.6 mmol of N,N-diisopropylamine are added, and the mixture is stirred at room temperature for 16 hours. 20 ml of ethyl acetate are added to the reaction mixture, which is then washed with a saturated aqueous sodium bicarbonate solution and a saturated aqueous sodium chloride solution. The combined aqueous phases are adjusted to pH=8 and extracted with ethyl acetate. The combined organic phases are finally washed with a saturated aqueous sodium chloride solution, dried over sodium sulphate and concentrated. This gives 548 mg (97% of theory) of product.

Provenance & Evidence