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

HRID 646021
ノート
印刷プレビュー

反応式

HRID 646021 の反応式
[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
参加物実験手順後処理出典と根拠反応ノート

参加物

7

反応物 4

HCID 1140Toluene2 回HCID 9357Potassium Sodium TartrateHCID 21225700Diisobutylaluminumhydride2 回HCID 59264851Methyl 3-[2-(2,6-dichlorophenyl)ethyl]-5-(1-methylethyl)-4-isoxazolecarboxylate

生成物 1

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

試薬・触媒・溶媒

2
HCID 887Methanol溶媒HCID 8028Tetrahydrofuran溶媒

実験手順

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).

後処理

  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)

出典と根拠

ORDレコード
ord-ca5f4c0cdbf84782924e05e38e919cb4
出典データセット
uspto-grants-2010_04
DOI
10.6084/m9.figshare.5104873.v1
特許番号
US07705028B2

反応ノート

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