Cesium carbonate → (2S,3R)-Allyl 3-methyl-2-(((5-(trifluoromethyl)pyridin-2-yl)amino)methyl)piperidine-1-carboxylate

HRID 60901Notes

Reaction equation

[NH2:1][CH2:2][C@@H:3]1[C@H:8]([CH3:9])[CH2:7][CH2:6][CH2:5][N:4]1[C:10]([O:12][CH2:13][CH:14]=[CH2:15])=[O:11].Cl[C:17]1[CH:22]=[CH:21][C:20]([C:23]([F:26])([F:25])[F:24])=[CH:19][N:18]=1.C([O-])([O-])=O.[Cs+].[Cs+]>CN(C=O)C.CCOC(C)=O>[CH3:9][C@@H:8]1[CH2:7][CH2:6][CH2:5][N:4]([C:10]([O:12][CH2:13][CH:14]=[CH2:15])=[O:11])[C@@H:3]1[CH2:2][NH:1][C:17]1[CH:22]=[CH:21][C:20]([C:23]([F:26])([F:25])[F:24])=[CH:19][N:18]=1

Participants

Conditions

Temperature: 80 °C

Procedure

A mixture of (2S,3R)-allyl 2-(aminomethyl)-3-methylpiperidine-1-carboxylate (1.36 g, 6.43 mmol), 2-chloro-5-(trifluoromethyl)pyridine (1.75 g, 9.645 mmol), and Cs2CO3 (4.2 g, 12.86 mmol) in DMF (20 mL) was stirred at 80° C. for 2 days. The reaction mixture was diluted with EtOAc and washed with brine. The organic layer was separated, dried with MgSO4 and concentrated in vacuo. The crude residue was purified by chromatography on silica gel (EtOAc/hexanes) to give the title compound. ESI-MS (m/z): 358 [M+1]+.

Workup

washwashed with brine
customThe organic layer was separated
dry with materialdried with MgSO4
concentrationconcentrated in vacuo
customThe crude residue was purified by chromatography on silica gel (EtOAc/hexanes)

Sources & evidence

ORD record: ord-403c447c53284840b1cb6ff980d365be
Source dataset: uspto-grants-2016_09
DOI: 10.6084/m9.figshare.5104873.v1
Patent number: US09440982B2

Reaction notes

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