Sodium hydride → tert-Butyl {1-[2-(6-methoxy-3-oxopyrido[2,3-b]pyrazin-4(3H)-yl)ethyl]piperidin-4-yl}carbamate

HRID 1644497Notes

Reaction equation

HRID 1644497 reaction equation
[CH3:1][O:2][C:3]1[CH:4]=[CH:5][C:6]2[N:11]=[CH:10][C:9](=[O:12])[NH:8][C:7]=2[N:13]=1.[H-].[Na+].CS(O[CH2:21][CH2:22][N:23]1[CH2:28][CH2:27][CH:26]([NH:29][C:30]([O:32][C:33]([CH3:36])([CH3:35])[CH3:34])=[O:31])[CH2:25][CH2:24]1)(=O)=O.C(OC(=O)NC1CCN(CCN2C3C(=CC=C(OC)C=3)C=CC2=O)CC1)(C)(C)C>ClCCl.CC(C)=O>[C:33]([O:32][C:30](=[O:31])[NH:29][CH:26]1[CH2:27][CH2:28][N:23]([CH2:22][CH2:21][N:8]2[C:9](=[O:12])[CH:10]=[N:11][C:6]3[CH:5]=[CH:4][C:3]([O:2][CH3:1])=[N:13][C:7]2=3)[CH2:24][CH2:25]1)([CH3:36])([CH3:35])[CH3:34]

Participants

7

Reactant 4

HCID 24758Sodium hydrideHCID 568344782-(4-((Tert-butoxycarbonyl)amino)piperidin-1-yl)ethyl methanesulfonate2×HCID 59371209tert-butyl {1-[2-(7-methoxy-2-oxoquinolin-1(2H)-yl)ethyl]piperidin-4-yl}carbamateHCID 667398036-Methoxypyrido[2,3-B]pyrazin-3(4H)-one2×

Product 1

HCID 57815384tert-Butyl {1-[2-(6-methoxy-3-oxopyrido[2,3-b]pyrazin-4(3H)-yl)ethyl]piperidin-4-yl}carbamateYield 67.1%

Reagents, catalysts & solvents 2

HCID 180AcetoneSolventHCID 6344DichloromethaneSolvent

Procedure

6-Methoxypyrido[2,3-b]pyrazin-3(4H)-one (Intermediate 204, 0.085 g, 0.48 mmol) was deprotonated with sodium hydride (0.030 g, 60% in oil, 0.7.5 mmol) and alkylated with 2-{4-[(tert-butoxycarbonyl)amino]piperidin-1-yl}ethyl methanesulfonate (Intermediate 6) (1.05 mmol) as described for Intermediate 2. Chromatography on silica gel with 0-25% acetone in dichloromethane gave 0.13 g of the title compound.

Sources & evidence

ORD record
ord-f7efb9d8d9a44bd59d91ecd47054c084
Source dataset
uspto-grants-2012_02
Patent number
US08124602B2

Reaction notes

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