1-Hydroxybenzotriazole → 2-[3-chloro-4-(methylsulfonyl)phenyl]-N-methoxy-N-methyl-3-(tetrahydro-2H-pyran-4-yl)propanamide

HRID 1881909Notes

Reaction equation

HRID 1881909 reaction equation
Cl.[CH3:2][O:3][NH:4][CH3:5].[Cl:6][C:7]1[CH:8]=[C:9]([CH:17]([CH2:21][CH:22]2[CH2:27][CH2:26][O:25][CH2:24][CH2:23]2)[C:18](O)=[O:19])[CH:10]=[CH:11][C:12]=1[S:13]([CH3:16])(=[O:15])=[O:14].Cl.CN(C)CCCN=C=NCC.ON1C2C=CC=CC=2N=N1>C(#N)C.C(OCC)(=O)C.C(N(CC)CC)C>[Cl:6][C:7]1[CH:8]=[C:9]([CH:17]([CH2:21][CH:22]2[CH2:27][CH2:26][O:25][CH2:24][CH2:23]2)[C:18]([N:4]([O:3][CH3:2])[CH3:5])=[O:19])[CH:10]=[CH:11][C:12]=1[S:13]([CH3:16])(=[O:15])=[O:14]

Participants

8

Reactant 4

HCID 757711-HydroxybenzotriazoleHCID 81138Methanamine, N-methoxy-, hydrochloride (1:1)HCID 27239391,3-Propanediamine, N'-(ethylcarbonimidoyl)-N,N-dimethyl-, monohydrochlorideHCID 219590492-(3-Chloro-4-methanesulfonyl-phenyl)-3-(tetrahydro-pyran-4-yl)-propionic acid

Product 1

HCID 593313932-[3-chloro-4-(methylsulfonyl)phenyl]-N-methoxy-N-methyl-3-(tetrahydro-2H-pyran-4-yl)propanamideYield 94.2%

Reagents, catalysts & solvents 3

HCID 6342AcetonitrileSolventHCID 8471TriethylamineSolventHCID 8857Ethyl AcetateSolvent

Procedure

A solution of N-methoxymethanamine hydrochloride (2.75 g) in acetonitrile (120 mL) was neutralized with triethylamine (9.83 mL), 2-[3-chloro-4-(methylsulfonyl)phenyl]-3-(tetrahydro-2H-pyran-4-yl)propanoic acid (8.16 g), N-[3-(dimethylamino)propyl]-N′-ethylcarbodiimide hydrochloride (6.77 g) and 1-hydroxybenzotriazole (541 mg) were added under ice-cooling. The reaction mixture was stirred overnight at room temperature, diluted with ethyl acetate, and washed with water and saturated aqueous sodium hydrogen carbonate. The ethyl acetate layer was dried (MgSO4) and concentrated. The residue was subjected to silica gel column chromatography, and the title compound (8.64 g, yield 94%) was obtained as a colorless amorphous solid from a fraction eluted with ethyl acetate-hexane (9:1, volume ratio).

Workup

  1. additionwere added under ice-
  2. temperaturecooling
  3. washwashed with water and saturated aqueous sodium hydrogen carbonate
  4. dry with materialThe ethyl acetate layer was dried (MgSO4)
  5. concentrationconcentrated

Sources & evidence

ORD record
ord-e8aadae2dec94707a95ec9fb4c10b74a
Source dataset
uspto-grants-2012_11
Patent number
US08318746B2

Reaction notes

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