Lithium hydroxide, monohydrate → HCID 68762168, compound

Participants

Reaction Steps

A solution of (R)-tert-butyl 5-(2-ethoxy-2-oxoethyl)-1-(5-methyl-6,7-dihydro-5H-cyclopenta[d]pyrimidin-4-yl)spiro[indoline-3,4′-piperidine]-1′-carboxylate (0.325 g, 0.641 mmol) in THF:H2O (2:1, 3 mL) was treated with LiOH—H2O (0.067 g, 1.6 mmol) at about 0° C. The reaction was stirred with warming to about room temperature overnight. The reaction was concentrated and diluted with EtOAc. The organic was washed with saturated NaHCO3, acidified with 1N HCl, and extracted with EtOAc. The combined organics were washed with brine, dried over MgSO4, filtered and concentrated to yield (R)-2-(1′-(tert-butoxycarbonyl)-1-(5-methyl-6,7-dihydro-5H-cyclopenta[d]pyrimidin-4-yl)spiro[indoline-3,4′-piperidine]-5-yl)acetic acid. LCMS (APCI+) m/z 479.3 [M+H]+; Rt=2.82 min.

Provenance & Evidence