Hexanoyl chloride → Methyl 4-(6-hexanamido-2,3-dihydrobenz-1,4-oxazin-4ylmethyl)-3-methoxybenzoate

HRID 1742308Notes

Reaction equation

HRID 1742308 reaction equation
[C:1](Cl)(=[O:7])[CH2:2][CH2:3][CH2:4][CH2:5][CH3:6].[NH2:9][C:10]1[CH:11]=[CH:12][C:13]2[O:18][CH2:17][CH2:16][N:15]([CH2:19][C:20]3[CH:29]=[CH:28][C:23]([C:24]([O:26][CH3:27])=[O:25])=[CH:22][C:21]=3[O:30][CH3:31])[C:14]=2[CH:32]=1>ClCCl>[C:1]([NH:9][C:10]1[CH:11]=[CH:12][C:13]2[O:18][CH2:17][CH2:16][N:15]([CH2:19][C:20]3[CH:29]=[CH:28][C:23]([C:24]([O:26][CH3:27])=[O:25])=[CH:22][C:21]=3[O:30][CH3:31])[C:14]=2[CH:32]=1)(=[O:7])[CH2:2][CH2:3][CH2:4][CH2:5][CH3:6]

Participants

4

Reactant 2

HCID 67340Hexanoyl chlorideHCID 14763126Methyl 4-(6-amino-2,3-dihydrobenz-1,4-oxazin4-ylmethyl)-3-methoxybenzoate

Product 1

HCID 23365905Methyl 4-(6-hexanamido-2,3-dihydrobenz-1,4-oxazin-4ylmethyl)-3-methoxybenzoateYield 82%

Reagents, catalysts & solvents 1

HCID 6344DichloromethaneSolvent2×

Procedure

Hexanoyl chloride (0.084 g.) was added to a stirred solution of methyl 4-(6-amino-2,3-dihydrobenz-1,4-oxazin-4-ylmethyl)-3-methoxybenzoate (L) (0.2 g.) in dichloromethane (20 ml.), under an atmosphere of nitrogen. The mixture was stirred for one hour and then diluted with dichloromethane (40 ml.). This mixture was washed with water, dried (MgSO4) and evaporated. The residual oil was dissolved in 3:7 v/v ethyl acetate:hexane, and the solution obtained was allowed to filter through a short column of silica gel, washing with one column volume of the same solvent mixture. Evaporation of the column eluate gave the title compound (0.212 g., 82%), as a foam; NMR (250 MHz, CDCl3): 0.9(t,3H, CH2CH3), 1.3(m,4H, CH3.CH2.CH2), 1.6(m,2H, CH2.CH2.CON), 2.2(t,2H, CH2.CON), 3.35(t,2H, OCH2.CH2N), 3.9(br s,6H, OCH3 +CO.OCH 3), 4.2 (t,2H, OCH2.CH2N ), 4.5 (s, 2H, CH2.Ar), 6.8(m,3H), 6.9(br s,1H, NH), 7.2(m,1H), 7.5 (m, 2H).

Workup

  1. washThis mixture was washed with water
  2. dry with materialdried (MgSO4)
  3. customevaporated
  4. dissolutionThe residual oil was dissolved in 3:7 v/v ethyl acetate
  5. customhexane, and the solution obtained
  6. filtrationto filter through a short column of silica gel
  7. washwashing with one column volume of the same solvent mixture
  8. customEvaporation of the column eluate

Sources & evidence

ORD record
ord-c4e8c1a513de4110a1d7c0fb2a1ace15
Source dataset
uspto-grants-1994_08
Patent number
US05338734

Reaction notes

Loading…