Ethylenediamine → (2-Aminoethyl)[2-methyl-9-(2,4,6-trimethylphenyl)-pyridino[2,3-b]indolizin-4-yl]amine

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Reaction Steps

Heat a solution of 4-chloro-2-methyl-9-(2,4,6-trimethylphenyl)pyridino[2,3-b]-indolizine (0.35 g, 1.04 mmol), and ethylene diamine (0.32 g, 1.04 mmol) in dry NMP (3 mL) at 100° C. for 5 h. Pour the cooled mixture onto water (30 mL) and extract twice with EtOAc (30 mL). Wash the combined extract with brine (30 mL), dry, and evaporate in vacuo. Purify by preparative TLC (20% MeOH in CH2Cl2 with 1% ammonium hydroxide) to obtain the title compound as a colorless oil.

Provenance & Evidence