Ethanol → Carfentrazone-ethyl

HRID 1851704노트

반응식

HRID 1851704 반응식
[Cl:1][CH:2]([CH2:6][C:7]1[CH:12]=[C:11]([N:13]2[C:17](=[O:18])[N:16]([CH:19]([F:21])[F:20])[C:15]([CH3:22])=[N:14]2)[C:10]([F:23])=[CH:9][C:8]=1[Cl:24])[C:3]([OH:5])=[O:4].[CH2:25](O)[CH3:26].CC1C=CC(S(O)(=O)=O)=CC=1>CC1C=CC=CC=1C>[CH3:25][CH2:26][O:4][C:3]([CH:2]([Cl:1])[CH2:6][C:7]1[CH:12]=[C:11]([N:13]2[N:14]=[C:15]([CH3:22])[N:16]([CH:19]([F:20])[F:21])[C:17]2=[O:18])[C:10]([F:23])=[CH:9][C:8]=1[Cl:24])=[O:5]

참가 물질

5

반응물 3

HCID 702EthanolHCID 6101p-Toluenesulfonic acidHCID 443229Carfentrazone

생성물 1

HCID 86222Carfentrazone-ethyl수율 93%

시약·촉매·용매 1

HCID 7237O-Xylene용매

실험 절차

To a flask was added 140 g of the 2-chloro-3-{2-chloro-5-[4-(difluoromethyl)-4,5-dihydro-3-methyl-5-oxo-1H-1,2,4-triazol-1-yl]-4-fluorophenyl}propionic acid, obtained according to the Example 1, 140 g of ethanol, 1.9 g of 4-methylbenzenesulfonic acid and 400 g of dimethyl benzene. The mixture was refluxed for 15 hours to remove water. The excess ethanol was recovered by distillation. At room temperature the mixture was washed with 200 g of water, with 200 g of a 4% (wt/wt) aqueous solution of sodium hydroxide and finally with water. The solvent was completely removed under reduced pressure to give carfentrazone-ethyl as a faint yellow transparent and viscous liquid in a yield of 93% with a purity of 99%. A HNMR spectrum of the carfentrazone-ethyl is showed in FIG. 1 and a mass spectrum thereof is showed in FIG. 2.

후처리

  1. customobtained
  2. temperatureThe mixture was refluxed for 15 hours
  3. customto remove water
  4. distillationThe excess ethanol was recovered by distillation
  5. washAt room temperature the mixture was washed with 200 g of water, with 200 g of a 4% (wt/wt) aqueous solution of sodium hydroxide and finally with water
  6. customThe solvent was completely removed under reduced pressure

출처 및 근거

ORD 기록
ord-fecde4d16ff44fd4ae7f5e9234f9afd3
출처 데이터셋
uspto-grants-2015_02
특허 번호
US08957220B2

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