Methyl iodide → 3-(4-Methoxy-benzyl)-1-methyl-2,4-dioxo-1,3,8-triaza-spiro[4.5]decane-8-carboxylic acid tert-butyl ester

HRID 898155Notes

Reaction equation

HRID 898155 reaction equation
[C:1]([O:5][C:6]([N:8]1[CH2:28][CH2:27][C:11]2([NH:15][C:14](=[O:16])[N:13]([CH2:17][C:18]3[CH:23]=[CH:22][C:21]([O:24][CH3:25])=[CH:20][CH:19]=3)[C:12]2=[O:26])[CH2:10][CH2:9]1)=[O:7])([CH3:4])([CH3:3])[CH3:2].[H-].[Na+].I[CH3:32]>CN(C=O)C>[C:1]([O:5][C:6]([N:8]1[CH2:28][CH2:27][C:11]2([N:15]([CH3:32])[C:14](=[O:16])[N:13]([CH2:17][C:18]3[CH:19]=[CH:20][C:21]([O:24][CH3:25])=[CH:22][CH:23]=3)[C:12]2=[O:26])[CH2:10][CH2:9]1)=[O:7])([CH3:4])([CH3:2])[CH3:3]

Participants

5

Reactant 3

HCID 6328Methyl iodideHCID 24758Sodium hydrideHCID 59691520HCID 59691520, compound

Product 1

HCID 596915243-(4-Methoxy-benzyl)-1-methyl-2,4-dioxo-1,3,8-triaza-spiro[4.5]decane-8-carboxylic acid tert-butyl esterYield 100.1%

Reagents, catalysts & solvents 1

HCID 6228DimethylformamideSolvent

Procedure

390 mg (1 mmol) of 3-(4-methoxybenzyl)-2,4-dioxo-1,3,8-triazaspiro[4.5]decane-8-carboxylic acid tert-butyl ester were solubilized in 5 mL of DMF under nitrogen before adding 61 mg (1.5 mmol) of sodium hydride in mineral oil 60%. The reaction mixture was agitated for 5 minutes before the addition of 70 μL (1.1 mmol) of iodomethane. After 2 hours of agitation at room temperature, the reaction mixture was quenched with 20 mL of water and then extracted with diethyl ether (2×20 mL). The organic layers were dried over sodium sulfate, filtrated and evaporated in vacuo to give quantitatively (404 mg) 3-(4-methoxy-benzyl)-1-methyl-2,4-dioxo-1,3,8-triaza-spiro[4.5]decane-8-carboxylic acid tert-butyl ester as a yellowish oil.

Workup

  1. customthe reaction mixture was quenched with 20 mL of water
  2. extractionextracted with diethyl ether (2×20 mL)
  3. dry with materialThe organic layers were dried over sodium sulfate
  4. filtrationfiltrated
  5. customevaporated in vacuo

Sources & evidence

ORD record
ord-c431178257af44edaefe46023c999862
Source dataset
uspto-grants-2008_04
Patent number
US07351713B2

Reaction notes

Loading…