Methyl iodide → HCID 68006446, compound

HRID 1026554Notes

Reaction equation

HRID 1026554 reaction equation
O1CCC[CH2:2]1.[Cl:6][C:7]1[CH:16]=[C:15]2[C:10]([CH2:11][CH:12]([CH3:31])[C:13](=[O:30])[N:14]2[CH:17]2[CH2:22][CH2:21][N:20]([C:23]([O:25][C:26]([CH3:29])([CH3:28])[CH3:27])=[O:24])[CH2:19][CH2:18]2)=[N:9][CH:8]=1.C[Si](C)(C)[N-][Si](C)(C)C.[Li+].CI>O.C(OCC)(=O)C>[Cl:6][C:7]1[CH:16]=[C:15]2[C:10]([CH2:11][C:12]([CH3:2])([CH3:31])[C:13](=[O:30])[N:14]2[CH:17]2[CH2:22][CH2:21][N:20]([C:23]([O:25][C:26]([CH3:27])([CH3:29])[CH3:28])=[O:24])[CH2:19][CH2:18]2)=[N:9][CH:8]=1

Participants

7

Reactant 4

HCID 6328Methyl iodideHCID 8028Tetrahydrofuran2×HCID 2733832Lithium HexamethyldisilazideHCID 68005624HCID 68005624, compound

Product 1

HCID 68006446HCID 68006446, compound

Reagents, catalysts & solvents 2

HCID 962WaterSolventHCID 8857Ethyl AcetateSolvent

Procedure

To a tetrahydrofuran solution (161 ml) of tert-butyl 4-(7-chloro-3-methyl-2-oxo-3,4-dihydro-1,5-naphthyridin-1(2H)-yl)piperidine-1-carboxylate (10.7 g) was added dropwise at −78° C. lithium hexamethyldisilazide (1.0 M tetrahydrofuran solution, 31.0 ml). After stirring at the same temperature for 15 minutes and under ice cooling for 20 minutes, a tetrahydrofuran solution (54 ml) of methyl iodide (2.10 ml) was added dropwise. After stirring at the same temperature for 10 minutes and at room temperature for 30 minutes, ethyl acetate and water were added to the reaction solution, and the solution was separated. The organic layer was dried over anhydrous sodium sulfate, and concentrated under reduced pressure. The resulting residue was purified by silica gel column chromatography to afford tert-butyl 4-(7-chloro-3,3-dimethyl-2-oxo-3,4-dihydro-1,5-naphthyridin-1(2H)-yl)piperidine-1-carboxylate (9.31 g).

Workup

  1. stirringAfter stirring at the same temperature for 10 minutes and at room temperature for 30 minutes
  2. customthe solution was separated
  3. dry with materialThe organic layer was dried over anhydrous sodium sulfate
  4. concentrationconcentrated under reduced pressure
  5. customThe resulting residue was purified by silica gel column chromatography

Sources & evidence

ORD record
ord-554a3dc4a3ba4ebebe680b054d62659f
Source dataset
uspto-grants-2014_05
Patent number
US08729095B2

Reaction notes

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