Diisopropylethylamine → 1-[7-(2-bromo-4-trifluoromethylphenyl)-2,5,6-trimethyl-7H-pyrrolo[2,3-d]pyrimidine-4-yl]piperidine-3-carbonitrile

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Reaction Steps

A mixture of 7-(2-bromo-4-trifluoromethylphenyl)-4-chloro-2,5,6-trimethyl-7H-pyrrolo[2,3-d]pyrimidine (400 mg), piperidine-3-carbonitrile (290 mg), N,N-diisopropylethylamine (309 mg) in ethanol (2 mL) was heated at reflux for 6 days. The reaction mixture was cooled to room temperature, and concentrated under reduced pressure. The residue was purified by a silica gel column chromatography (silica gel: Wako Gel (C200), eluent: hexane/ethyl acetate=5:1) to obtain two diastereoisomers (low polar diastereoisomer: 62 mg and high polar diastereoisomer: 36 mg) of 1-[7-(2-bromo-4-trifluoromethylphenyl)-2,5,6-trimethyl-7H-pyrrolo[2,3-d]pyrimidine-4-yl]piperidine-3-carbonitrile.

Provenance & Evidence