Dichloromethane → Foramsulfuron

HRID 2301690Notes

Reaction equation

HRID 2301690 reaction equation
[CH3:1][O:2][C:3]1[CH:8]=[C:7]([O:9][CH3:10])[N:6]=[C:5]([NH:11][C:12]([NH:14][S:15]([C:18]2[CH:23]=[C:22]([NH2:24])[CH:21]=[CH:20][C:19]=2[C:25]([N:27]([CH3:29])[CH3:28])=[O:26])(=[O:17])=[O:16])=[O:13])[N:4]=1.ClCCl.[C:33](OC(=O)C)(=[O:35])C>C(O)=O>[CH3:1][O:2][C:3]1[CH:8]=[C:7]([O:9][CH3:10])[N:6]=[C:5]([NH:11][C:12]([NH:14][S:15]([C:18]2[CH:23]=[C:22]([NH:24][CH:33]=[O:35])[CH:21]=[CH:20][C:19]=2[C:25]([N:27]([CH3:29])[CH3:28])=[O:26])(=[O:17])=[O:16])=[O:13])[N:4]=1

Participants

5

Reactant 3

HCID 6344DichloromethaneHCID 7918Acetic AnhydrideHCID 108627955-amino-N-[(4,6-dimethoxypyrimidin-2-yl)aminocarbonyl]-2-dimethylaminocarbonylbenzenesulfonamide

Product 1

HCID 11419598Foramsulfuron

Reagents, catalysts & solvents 1

HCID 284Formic AcidSolvent

Procedure

A solution of 1.9 g of N-[(4,6-dimethoxypyrimidin-2-yl)aminocarbonyl]-5-amino-2-dimethylaminocarbonylbenzenesulfonamide and 10 ml of dichloromethane is added dropwise to the mixed anhydride, prepared in situ from 0.5 ml of formic acid and 1.0 ml of acetic anhydride in accordance with standard methods. After the end of reaction, the reaction mixture is concentrated and the residue is washed with water and ethyl acetate, to give 1.8 g of desired product; purity>92% (HPLC).

Workup

  1. customAfter the end of reaction
  2. concentrationthe reaction mixture is concentrated
  3. washthe residue is washed with water and ethyl acetate

Sources & evidence

ORD record
ord-dc9bb9593fcc4c66ae88cf9b0a204658
Source dataset
uspto-grants-2002_12
Patent number
US06500952B1

Reaction notes

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