Triphenylphosphine → (R)-tert-butyl 3-(4-chloro-7H-pyrrolo[2,3-d]pyrimidin-7-yl)piperidine-1-carboxylate

Participants

Reaction Steps

To the solution of 4-chloro-7H-pyrrolo[2,3-d]pyrimidine (10 g, 65.12 mmol, 1.0 eq) and (S)-tert-butyl 3-hydroxypiperidine-1-carboxylate (13.0 g, 65.12 mmol, 1.0 eq) and PPh3 (34.20 g, 130.24 mmol, 2.0 eq) in THF (400 mL), DEAD (22.68 g, 130.24 mmol, 2.0 eq) was added at 0° C. The resulted mixture was stirred and warmed to RT for 12 h. The reaction mixture was purified by column (10% EtOAc in petroleum ether) to afford (R)-tert-butyl 3-(4-chloro-7H-pyrrolo[2,3-d]pyrimidin-7-yl)piperidine-1-carboxylate (2.1 g, 10% in yield) as colorless oil.

Provenance & Evidence