Tetrahydrofuran → Isohexane ethyl acetate

HRID 1426874ノート

反応式

HRID 1426874 の反応式
[C:1]([O:5][C:6]1[CH:7]=[C:8]([CH:19]=O)[C:9]2[S:13][C:12]([O:14][CH:15]([CH3:17])[CH3:16])=[N:11][C:10]=2[CH:18]=1)([CH3:4])([CH3:3])[CH3:2].[O:21]1[CH2:25][CH2:24][CH2:23][CH2:22]1>ClCCl>[C:1]([O:5][C:6]1[CH:7]=[C:8]([CH:19]=[CH2:22])[C:9]2[S:13][C:12]([O:14][CH:15]([CH3:16])[CH3:17])=[N:11][C:10]=2[CH:18]=1)([CH3:2])([CH3:3])[CH3:4].[C:22]([O:21][CH2:25][CH3:24])(=[O:5])[CH3:23].[CH3:18][CH2:6][CH2:7][CH:8]([CH3:19])[CH3:9]

参加物

5

反応物 2

HCID 8028TetrahydrofuranHCID 866198325-Tert-butoxy-2-isopropoxybenzo[d]thiazole-7-carbaldehyde

生成物 2

HCID 21882781Isohexane ethyl acetateHCID 667441865-(Tert-butoxy)-2-isopropoxy-7-vinylbenzo[d]thiazole

試薬・触媒・溶媒 1

HCID 6344Dichloromethane溶媒

実験手順

Ph3PMe.Br (5.0 g) is dissolved in dry tetrahydrofuran (100 ml) under argon. N-butyl lithium (8.8 ml, of 1.6 M solution) is added at room temperature over 10 minutes and reaction mixture stirred for a further 30 minutes. A solution of 5-tert-Butoxy-2-isopropoxy-benzothiazole-7-carbaldehyde (1.25 g) in dichloromethane (40 ml) is added drop wise to the reaction mixture and the reaction mixture is stirred for 4.5 hours at room temperature. The solvent is removed in vacuo, redissolved in ethyl acetate, washed with water (3×), brine (1×), dried over MgSO4, filtered and the solvent removed in vacuo. The title compound is obtained by flash column chromatography (silica, eluent ethyl acetate/iso-hexane 1:9).

後処理

  1. customreaction mixture
  2. stirringthe reaction mixture is stirred for 4.5 hours at room temperature
  3. customThe solvent is removed in vacuo
  4. dissolutionredissolved in ethyl acetate
  5. washwashed with water (3×), brine (1×)
  6. dry with materialdried over MgSO4
  7. filtrationfiltered
  8. customthe solvent removed in vacuo

出典と根拠

ORDレコード
ord-651e16bd11614c2fa6d1de84314b8891
出典データセット
uspto-grants-2015_01
特許番号
US08933108B2

反応ノート

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