Potassium Carbonate → HCID 57741270, compound

Participants

Reaction Steps

A solution of 0.3 g (0.85 mmol)) 4-(7-acetylamino-4,5-dihydro-pyrazolo[3′,4′:3,4]benzo[1,2-d]thiazol-1-yl)-benzoic acid (prepared analogously to Example 1), 0.32 g (1.00 mmol) TBTU and 0.75 ml (4.38 mmol) diisopropylethylamine in 25 ml dichloromethane is stirred for 15 minutes at ambient temperature and then combined with 0.17 g (0.86 mmol) 4-N-Boc-aminopiperidine. After 2.5 hours the reaction mixture is poured onto 25 ml 5% potassium carbonate solution. The organic phase is dried and evaporated down. The residue is triturated with ethyl acetate/ether.

Provenance & Evidence