Dabco → Azoxystrobin

HRID 1645232

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HRID 1645232 반응식
Cl[C:2]1[N:7]=[CH:6][N:5]=[C:4]([O:8][C:9]2[CH:14]=[CH:13][CH:12]=[CH:11][C:10]=2/[C:15](=[CH:20]\[O:21][CH3:22])/[C:16]([O:18][CH3:19])=[O:17])[CH:3]=1.[C:23](=[O:26])([O-])[O-].[K+].[K+].C1N2[CH2:35][CH2:36][N:31](CC2)C1>CN(C=O)C>[C:36]([C:35]1[CH:11]=[CH:10][CH:9]=[CH:14][C:23]=1[O:26][C:2]1[N:7]=[CH:6][N:5]=[C:4]([O:8][C:9]2[CH:14]=[CH:13][CH:12]=[CH:11][C:10]=2/[C:15](=[CH:20]\[O:21][CH3:22])/[C:16]([O:18][CH3:19])=[O:17])[CH:3]=1)#[N:31]

참가 물질

5

반응물 3

HCID 9237DabcoHCID 11430Potassium CarbonateHCID 11782200Methyl (2E)-2-(2-((6-chloropyrimidin-4-yl)oxy)phenyl)-3-methoxyprop-2-enoate

생성물 1

HCID 3034285Azoxystrobin수율 83.2%

시약·촉매·용매 1

HCID 6228Dimethylformamide용매2회

반응 조건

온도
80 °C

실험 절차

To a solution of methyl (E)-2-{2-[6-chloropyrimidin-4-yloxy]phenyl}-3-methoxyacrylate (96.2 g; prepared as described in WO 92/08703) in DMF (approximately 100 g) was added a DMF solution of 2-cyanophenyl (78.5 g at 50% w/w 2-cyanophenyl) followed by potassium carbonate (63.5 g) and DABCO (0.34 g). The mixture was heated to 80° C. and held for 75 minutes. The DMF was removed by vacuum distillation to a final temperature of 100° C. Toluene (165.8 g) was charged to the distillation residues and the temperature brought to 75° C. before adding hot water (318.6 g) and stirring for 30 minutes at 80° C. The aqueous phase was removed and then the toluene layer was sampled and analysed. The solution yield of methyl (E)-2-{2-[6-(2-cyanophenoxy)pyrimidin-4-yloxy]phenyl}-3-methoxyacrylate (azoxystrobin) was 90.0%. The toluene was distilled off under vacuum. Methanol (88 g) was added to the distillation residues at 70° C. and the mixture cooled to <5° C., filtered and the cake washed with methanol (2×30 ml) to give, after drying, methyl (E)-2-{2-[6-(2-cyano-phenoxy)pyrimidin-4-yloxy]phenyl}-3-methoxyacrylate (83.2% yield).

후처리

  1. customThe DMF was removed by vacuum distillation to a final temperature of 100° C
  2. additionToluene (165.8 g) was charged to the distillation residues
  3. custombrought to 75° C.
  4. additionbefore adding hot water (318.6 g)
  5. customThe aqueous phase was removed
  6. aliquotthe toluene layer was sampled
  7. distillationThe toluene was distilled off under vacuum
  8. additionMethanol (88 g) was added to the distillation residues at 70° C.
  9. temperaturethe mixture cooled to <5° C.
  10. filtrationfiltered
  11. washthe cake washed with methanol (2×30 ml)
  12. customto give
  13. customafter drying

출처 및 근거

ORD 기록
ord-06c8aa0c775c47019512e4f701262840
출처 데이터셋
uspto-grants-2012_02
특허 번호
US08124761B2

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