Sodium hydride → Methyl(3R,4R)-4-{[(benzyloxy)carbonyl]amino}-1-[2-(5,7-difluoro-2-oxoquinolin-1(2H)-yl)ethyl]piperidine-3-carboxylate

HRID 255195Notes

Reaction equation

HRID 255195 reaction equation
[F:1][C:2]1[CH:11]=[C:10]([F:12])[CH:9]=[C:8]2[C:3]=1[CH:4]=[CH:5][C:6](=[O:13])[NH:7]2.[H-].[Na+].[CH2:16]([O:23][C:24]([NH:26][C@@H:27]1[CH2:32][CH2:31][N:30]([CH2:33][CH2:34]OS(C)(=O)=O)[CH2:29][C@H:28]1[C:40]([O:42][CH3:43])=[O:41])=[O:25])[C:17]1[CH:22]=[CH:21][CH:20]=[CH:19][CH:18]=1.FC1C(F)=C2C(C=CC(=O)N2CCN2CCC(NC(=O)OC(C)(C)C)CC2)=CC=1>>[CH2:16]([O:23][C:24]([NH:26][C@@H:27]1[CH2:32][CH2:31][N:30]([CH2:33][CH2:34][N:7]2[C:8]3[C:3](=[C:2]([F:1])[CH:11]=[C:10]([F:12])[CH:9]=3)[CH:4]=[CH:5][C:6]2=[O:13])[CH2:29][C@H:28]1[C:40]([O:42][CH3:43])=[O:41])=[O:25])[C:17]1[CH:18]=[CH:19][CH:20]=[CH:21][CH:22]=1

Participants

5

Reactant 4

HCID 24758Sodium hydrideHCID 642082495,7-Difluoro-1,2-dihydroquinolin-2-one2×HCID 86642603tert-butyl{1-[2-(7,8-difluoro-2-oxoquinolin-1(2H)-yl)ethyl]piperidin-4-yl}carbamateHCID 86642605Methyl(3R,4R)-4-{[(benzyloxy)carbonyl]amino}-1-{2-[(methylsulfonyl)oxy]ethyl}piperidine-3-carboxylate2×

Product 1

HCID 66773321Methyl(3R,4R)-4-{[(benzyloxy)carbonyl]amino}-1-[2-(5,7-difluoro-2-oxoquinolin-1(2H)-yl)ethyl]piperidine-3-carboxylate

Procedure

5,7-Difluoroquinolin-2(1H)-one (Intermediate 25) (350 mg, 1.93 mmol) was deprotonated with sodium hydride (85 mg, 60% in oil, 2.13 mmol) and alkylated with methyl (3R,4R)-4-{[(benzyloxy)carbonyl]amino}-1-{2-[(methylsulfonyl)oxy]ethyl}piperidine-3-carboxylate (Intermediate 40) (1.93 mmol) as described for Intermediate 20 to give the product as a colorless hard foam, 538 mg (56%).

Sources & evidence

ORD record
ord-8d42dc37c2c343eaad16dc086940a6ba
Source dataset
uspto-grants-2011_01
Patent number
US07875715B2

Reaction notes

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