N-Methylallylamine → 6-[4-(Allyl-methyl-amino)-butoxy]-3,4-dihydro-2H-quinoline-1-carboxylic acid tert-butyl ester

HRID 49478

Reaction equation

HRID 49478 reaction equation
[C:1]([O:5][C:6]([N:8]1[C:17]2[C:12](=[CH:13][C:14]([O:18][CH2:19][CH2:20][CH2:21][CH2:22]Br)=[CH:15][CH:16]=2)[CH2:11][CH2:10][CH2:9]1)=[O:7])([CH3:4])([CH3:3])[CH3:2].[CH2:24]([NH:27][CH3:28])[CH:25]=[CH2:26]>CN(C=O)C>[C:1]([O:5][C:6]([N:8]1[C:17]2[C:12](=[CH:13][C:14]([O:18][CH2:19][CH2:20][CH2:21][CH2:22][N:27]([CH2:24][CH:25]=[CH2:26])[CH3:28])=[CH:15][CH:16]=2)[CH2:11][CH2:10][CH2:9]1)=[O:7])([CH3:4])([CH3:3])[CH3:2]

Participants

4

Reactant 2

HCID 69391N-MethylallylamineHCID 695151816-(4-Bromo-butoxy)-3,4-dihydro-2H-quinoline-1-carboxylic acid tert-butyl ester

Product 1

HCID 695154176-[4-(Allyl-methyl-amino)-butoxy]-3,4-dihydro-2H-quinoline-1-carboxylic acid tert-butyl esterYield 74%

Reagents, catalysts & solvents 1

HCID 6228DimethylformamideSolvent

Procedure

5.0 g (13.0 mmol) 6-(4-Bromo-butoxy)-3,4-dihydro-2H-quinoline-1-carboxylic acid tert-butyl ester were treated with 3.66 g (51.5 mmol) N-allyl-methylamine in 100 ml DMF at 50° C. for 30 min. The mixture was concentrated in vacuo, dissolved in Et2O and water. The inorganic layer was extracted with Et2O, and the combined organic phases were washed with water and dried over Na2SO4. Purification by column chromatography on silica gel with CH2Cl2/MeOH 10:1 yielded 3.6 g (74%) 6-[4-(Allyl-methyl-amino)-butoxy]-3,4-dihydro-2H-quinoline-1-carboxylic acid tert-butyl ester as light yellow oil, MS: 375 (MH+).

Workup

  1. concentrationThe mixture was concentrated in vacuo
  2. dissolutiondissolved in Et2O
  3. extractionThe inorganic layer was extracted with Et2O
  4. washthe combined organic phases were washed with water
  5. dry with materialdried over Na2SO4
  6. customPurification by column chromatography on silica gel with CH2Cl2/MeOH 10:1

Sources & evidence

ORD record
ord-6b8b37ce99ad41bdb69ce4f9f30ee8ef
Source dataset
uspto-grants-2004_03
Patent number
US06706751B2

Linked notes

Loading…