tert-Butyl 4-oxopiperidine-1-carboxylate → HCID 58441736, compound

HRID 2098722Notes

Reaction equation

[Cl:1][C:2]1[N:3]=[C:4]([N:11]2[CH2:16][CH2:15][O:14][CH2:13][CH2:12]2)[C:5]2[S:10][CH:9]=[CH:8][C:6]=2[N:7]=1.C([Li])CCC.[C:22]([N:29]1[CH2:34][CH2:33][C:32](=[O:35])[CH2:31][CH2:30]1)([O:24][C:25]([CH3:28])([CH3:27])[CH3:26])=[O:23]>O1CCCC1>[C:25]([O:24][C:22]([N:29]1[CH2:34][CH2:33][C:32]([C:9]2[S:10][C:5]3[C:4]([N:11]4[CH2:16][CH2:15][O:14][CH2:13][CH2:12]4)=[N:3][C:2]([Cl:1])=[N:7][C:6]=3[CH:8]=2)([OH:35])[CH2:31][CH2:30]1)=[O:23])([CH3:28])([CH3:26])[CH3:27]

Participants

Conditions

Temperature: -40 °C

Procedure

To solution of 2-chloro-4-morpholin-4-yl-thieno[3,2-d]pyrimidine 4 (1.22 g) in anhydrous tetrahydrofuran (20 ml) stirring at −78° C. was added 2.5M n-butyllithium in hexanes (2.3 mL). The reaction mixture was warmed gradually to −40° C. over 1 hour, cooled to −78° C., and 1-BOC-4-Piperidone (950 mg) was added. The reaction mixture was gradually warmed to room temperature and then left to stir for 2 hours, poured into ice/water and extracted into ethyl acetate. After the usual drying and evaporation of the solvent, the residue was purified by flash chromatography to give 4-(2-chloro-4-morpholin-4-yl-thieno[3,2-d]pyrimidin-6-yl)-4-hydroxy-piperidine-1-carboxylic acid tert-butyl ester.

Workup

temperaturecooled to −78° C.
temperatureThe reaction mixture was gradually warmed to room temperature
waitleft
extractionextracted into ethyl acetate
customAfter the usual drying
customevaporation of the solvent
customthe residue was purified by flash chromatography

Sources & evidence

ORD record: ord-0ef2a35c687f40568227046749804cb1
Source dataset: uspto-grants-2013_05
DOI: 10.6084/m9.figshare.5104873.v1
Patent number: US08450315B2

Reaction notes

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