1-Hydroxybenzotriazole → HCID 9901529, compound

Participants

Reaction Steps

Firstly, 319 mg (0.99 mmol) of TBTU and 137 mg (1.01 mmol) of HOBt are added to a solution of 182 mg (1.05 mmol) of quinoline-6-carboxylic acid and diisopropylethylamine (620 mg, 4.8 mmol) in 4 mL of DMF at RT, and then 200 mg (1.0 mmol) of 3-aminoquinuclidine dihydrochloride are added. The mixture is stirred at RT for 4 h. For a workup, it is concentrated and taken up in a mixture of chloroform and excess aqueous NaOH. The phases are separated and the aqueous phase is back-extracted several times with chloroform. The combined organic phases are dried over sodium sulfate and concentrated, and the crude product is chromatographed on a silica gel column (mobile, chloroform:methanol: conc. NH3=100:20:4). The resulting product is taken up in THF, excess HCl in diethyl ether is added, and the mixture is concentrated and dried under high vacuum. 136 mg (47% yield) of the hydrochloride are obtained.

Provenance & Evidence