Triethylamine → 2-Methyl-cyclopropanecarboxylic acid (6-oxo-2-phenyl-5,6-dihydro-1h-[1,2]diazepino[4,5,6-cd]indol-8-yl)-amide

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Reaction Steps

Triethylamine (0.030 mL, 0.22 mmol), the title compound of Example 7 (15 mg, 0.054 mmol) and 2-methyl-cyclopropanecarboxylic acid (6 mg, 0.062 mmol) were stirred in N,N-dimethylformamide (1.0 mL). O-(7-azabenzotriazol-1-yl)-N,N,N′,N′-tetramethyluronium hexafluorophosphate (25 mg, 0.065 mmol) was added and the reaction was stirred overnight at which point the volatile components were removed under vacuum. The resulting mixture was purified on silica gel, eluting with 3:2 hexane:ethyl acetate. The purest fractions were combined and after solvent removal, the resulting solids were triturated with diethyl ether to give the title compound (7 mg, 0.020 mmol) as yellow powder in 36% yield.

Provenance & Evidence