Triethylamine → HCID 68608407, compound

Participants

Reaction Steps

A solution of 440 mg tert.-butyl 5-{(R)-2-carboxy-2-[4-(2-oxo-1,2,4,5-tetrahydro-1,3-benzodiazepin-3-yl)-piperidine-1-carbonyloxy]-ethyl}-7-methyl-indazol-1-carboxylate, 256 mg (0.8 mmol) TBTU, 146 μL (1.0 mmol) triethylamine and 147 mg (0.8 mmol) 1-methyl-4-piperidin-4-yl-piperazine in 8 mL DMF was stirred for 2 h at RT. The reaction solution was filtered through an injection filter and purified directly by HPLC without any further working up. The fractions containing the product were combined, evaporated down i.vac., made alkaline with 15% K2CO3 solution, extracted three times with 30 mL DCM, the combined organic phases were dried over Na2SO4 and the solvent was eliminated i. vac.

Provenance & Evidence