Dimethylformamide → HCID 69810882, compound

Participants

Reaction Conditions

Reaction Steps

To a solution (R)-tert-butyl 4-bromo-5-chloro-1-(5-methyl-6,7-dihydro-5H-cyclopenta[d]pyrimidin-4-yl)spiro[indoline-3,4′-piperidine]-1′-carboxylate (0.200 g, 0.375 mmol) in DMF (2 mL) was added zinc cyanide (0.088 g, 0.75 mmol) and tetrakis(triphenylphosphine)palladium (0) (0.022 g, 0.019 mmol). The mixture was heated at about 95° C. for 2 days. After cooling, the mixture was diluted with water and extracted with EtOAc. The combined organic layers were washed with saturated aqueous NaHCO3 solution and brine, dried and concentrated. The residue was purified by flash chromatography on silica gel (EtOAc hexanes, 1:1) to give (R)-tert-butyl 5-chloro-4-cyano-1-(5-methyl-6,7-dihydro-5H-cyclopenta[d]pyrimidin-4-yl)spiro[indoline-3,4′-piperidine]-1′-carboxylate (0.060 g, 33%) as a oil. LCMS (APCI+) m/z 480, 482 [M+H]+; Rt=4.51 min.

Provenance & Evidence