Sodium hydride → HCID 86714300, compound

HRID 2280154Notes

Reaction equation

[OH:1][CH2:2][CH:3]1[CH2:8][CH2:7][CH2:6][CH2:5][N:4]1[C:9]([O:11][C:12]([CH3:15])([CH3:14])[CH3:13])=[O:10].[H-].[Na+].[N+:18]([C:21]1[CH:28]=[CH:27][CH:26]=[C:25]([N+]([O-])=O)[C:22]=1[C:23]#[N:24])([O-:20])=[O:19]>C1COCC1.CN(C=O)C.O>[C:23]([C:22]1[C:21]([N+:18]([O-:20])=[O:19])=[CH:28][CH:27]=[CH:26][C:25]=1[O:1][CH2:2][CH:3]1[CH2:8][CH2:7][CH2:6][CH2:5][N:4]1[C:9]([O:11][C:12]([CH3:15])([CH3:14])[CH3:13])=[O:10])#[N:24]

Participants

Conditions

Temperature: -20 °C

Procedure

To a solution of tert-butyl 2-(hydroxymethyl)piperidine-1-carboxylate (0.86 g, 4 mmol) in dry THF (30 mL) was added at −20° C. NaH (0.32 g, 8 mmol) and the mixture was stirred 10 min at −20° C. and then 20 min at room temperature. The reaction mixture was then cooled to −20° C. and 2,6-dinitrobenzonitrile (0.772 g, 4 mmol) in dry THF (10 mL) and DMF (1 mL) was added dropwise over 15 min period. The solution was stirred under nitrogen at room temperature for 18 hours, diluted with water and extracted with EtOAc, the combined organic phases were washed with brine, dried over MgSO4, filtered and evaporated. The residue was purified by Biotage purification system (120 g Silicycle column, Hexane:EtOAc=3:2 as eluent) to give tert-butyl 2-((2-cyano-3-nitrophenoxy)methyl)piperidine-1-carboxylate (1.02 g, 70.6%). MS 262 [M+H-Boc]+.

Workup

custom20 min
customat room temperature
extractionextracted with EtOAc
washthe combined organic phases were washed with brine
dry with materialdried over MgSO4
filtrationfiltered
customevaporated
customThe residue was purified by Biotage purification system (120 g Silicycle column, Hexane:EtOAc=3:2 as eluent)

Sources & evidence

ORD record: ord-8aba32053ce04c9da9716b6578548c0f
Source dataset: uspto-grants-2015_09
DOI: 10.6084/m9.figshare.5104873.v1
Patent number: US09138013B2

Reaction notes

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