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Toluene → [3-[2-(2,6-Dichlorophenyl)ethyl]-5-(1-methylethyl)-4-isoxazolyl]methanol

HRID 646021
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HRID 646021 반응식
[Cl:1][C:2]1[CH:7]=[CH:6][CH:5]=[C:4]([Cl:8])[C:3]=1[CH2:9][CH2:10][C:11]1[C:15]([C:16](OC)=[O:17])=[C:14]([CH:20]([CH3:22])[CH3:21])[O:13][N:12]=1.[H-].C([Al+]CC(C)C)C(C)C.C1(C)C=CC=CC=1.[C@H](O)(C([O-])=O)[C@@H](O)C([O-])=O.[Na+].[K+]>C1COCC1.CO>[Cl:1][C:2]1[CH:7]=[CH:6][CH:5]=[C:4]([Cl:8])[C:3]=1[CH2:9][CH2:10][C:11]1[C:15]([CH2:16][OH:17])=[C:14]([CH:20]([CH3:22])[CH3:21])[O:13][N:12]=1
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참가 물질

7

반응물 4

HCID 1140Toluene2회HCID 9357Potassium Sodium TartrateHCID 21225700Diisobutylaluminumhydride2회HCID 59264851Methyl 3-[2-(2,6-dichlorophenyl)ethyl]-5-(1-methylethyl)-4-isoxazolecarboxylate

생성물 1

HCID 59264863[3-[2-(2,6-Dichlorophenyl)ethyl]-5-(1-methylethyl)-4-isoxazolyl]methanol수율 96.8%

시약·촉매·용매

2
HCID 887Methanol용매HCID 8028Tetrahydrofuran용매

실험 절차

A solution of methyl 3-[2-(2,6-dichlorophenyl)ethyl]-5-(1-methylethyl)-4-isoxazolecarboxylate (0.900 g, 2.63 mmol) in THF (7.3 mL) was stirred at 0° C. as a 1.5M solution of diisobutylaluminum hydride in toluene (3.7 mL, 5.6 mmol) was added. The solution was allowed to warm to room temperature and stir overnight. Additional diisobutylaluminum hydride in toluene (1.8 mL, 2.7 mmol) was added and the solution was allowed to stir for another 3 hours. Methanol was added followed by a saturated aqueous solution of Rochelle's salt. The solution was stirred for two hours then was partitioned between ethyl acetate and brine. The organic layer was dried with magnesium sulfate, concentrated and purified by chromatography (silica gel, 0-60% ethyl acetate in hexane) to provide the title compound (0.80 g, 51.6% as 0.25EtOAc). 1H NMR (DMSO-d6): δ 7.45 (d, J=8 Hz, 2H), 7.28 (t, J=8 Hz, 1H), 4.89 (t, J=5 Hz, 1H), 4.26 (d, J=5 Hz, 2H), 3.31-3.18 (m, 3H), 2.83-2.79 (m, 2H), 1.21 (d, J=7 Hz, 6H).

후처리

  1. additionwas added
  2. stirringto stir for another 3 hours
  3. stirringThe solution was stirred for two hours
  4. customthen was partitioned between ethyl acetate and brine
  5. dry with materialThe organic layer was dried with magnesium sulfate
  6. concentrationconcentrated
  7. custompurified by chromatography (silica gel, 0-60% ethyl acetate in hexane)

출처 및 근거

ORD 기록
ord-ca5f4c0cdbf84782924e05e38e919cb4
출처 데이터셋
uspto-grants-2010_04
DOI
10.6084/m9.figshare.5104873.v1
특허 번호
US07705028B2

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