Methyl iodide → 5-amino-1-[2,6-dichloro-4-(trifluoromethyl)phenyl]-4-methylsulfinyl-1H-pyrazole-3-carboxaldehyde O-(methyl)oxime

HRID 989224노트

반응식

HRID 989224 반응식
[NH2:1][C:2]1[N:6]([C:7]2[C:12]([Cl:13])=[CH:11][C:10]([C:14]([F:17])([F:16])[F:15])=[CH:9][C:8]=2[Cl:18])[N:5]=[C:4]([CH:19]=[N:20][OH:21])[C:3]=1[S:22]([CH3:24])=[O:23].[O-][CH2:26]C.[Na+].IC>C(O)C>[CH3:26][O:21][N:20]=[CH:19][C:4]1[C:3]([S:22]([CH3:24])=[O:23])=[C:2]([NH2:1])[N:6]([C:7]2[C:12]([Cl:13])=[CH:11][C:10]([C:14]([F:17])([F:16])[F:15])=[CH:9][C:8]=2[Cl:18])[N:5]=1

참가 물질

5

반응물 3

HCID 6328Methyl iodide2회HCID 2723922Sodium ethoxideHCID 1363524165-amino-1-[2,6-dichloro-4-(trifluoromethyl)-phenyl]-4-methylsulfinyl-1H-pyrazole-3-carboxaldehyde oxime

생성물 1

HCID 545293625-amino-1-[2,6-dichloro-4-(trifluoromethyl)phenyl]-4-methylsulfinyl-1H-pyrazole-3-carboxaldehyde O-(methyl)oxime수율 39.3%

시약·촉매·용매 1

HCID 702Ethanol용매2회

실험 절차

A solution of 5-amino-1-[2,6-dichloro-4-(trifluoromethyl)-phenyl]-4-methylsulfinyl-1H-pyrazole-3-carboxaldehyde oxime (0.15 g) in ethanol was added to a solution of sodium ethoxide (0.025 g) in ethanol at 20° C., followed by iodomethane (0.023 ml). The reaction was monitored by HPLC and over the next 24 hours three additional equivalents of iodomethane were added. The reaction mixture was then, concentrated and partitioned between dichloromethane and water. The organic layer was water-washed, dried (MgSO4) and concentrated. This was then combined with crude product from another identical preparation and chromatographed on a silica gel column, eluting with hexane/ethyl acetate, to give 5-amino-1-[2,6-dichloro-4-(trifluoromethyl)phenyl]-4-methylsulfinyl-1H-pyrazole-3-carboxaldehyde O-(methyl)oxime (0.06 g) as a yellow solid m.p.80° C. Compound 17.

후처리

  1. additionwere added
  2. concentrationconcentrated
  3. custompartitioned between dichloromethane and water
  4. washwashed
  5. dry with materialdried (MgSO4)
  6. concentrationconcentrated
  7. customThis was then combined with crude product from another identical preparation
  8. customchromatographed on a silica gel column
  9. washeluting with hexane/ethyl acetate

출처 및 근거

ORD 기록
ord-e404aca62405486785ab5eaec48067c8
출처 데이터셋
uspto-grants-2003_10
특허 번호
US06638956B2

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