tert-Butanol → tert-Butyl (4-methylphenyl)acetate

HRID 25152

반응식

HRID 25152 반응식
[CH3:1][C:2]1[CH:7]=[CH:6][C:5]([CH2:8][C:9]([OH:11])=[O:10])=[CH:4][CH:3]=1.[C:12](O)([CH3:15])([CH3:14])[CH3:13].C1(N=C=NC2CCCCC2)CCCCC1>CN(C1C=CN=CC=1)C.ClCCl>[CH3:1][C:2]1[CH:3]=[CH:4][C:5]([CH2:8][C:9]([O:11][C:12]([CH3:15])([CH3:14])[CH3:13])=[O:10])=[CH:6][CH:7]=1

참가 물질

6

반응물 3

HCID 6386tert-ButanolHCID 10868DicyclohexylcarbodiimideHCID 248474p-Tolylacetic acid

생성물 1

HCID 12362014tert-Butyl (4-methylphenyl)acetate

시약·촉매·용매 2

HCID 142844-(Dimethylamino)pyridine촉매HCID 6344Dichloromethane용매2회

반응 조건

온도
25 °C

실험 절차

450 g (3 mol) of 4-methylphenyl-acetic acid (Aldrich), 1.13 l (12 mol) of tert-butanol and 90 g (0.74 mol) of 4-(N,N-dimethylamino)pyridine are dissolved in 2 l of dichloromethane. After addition of 680 g (3.3 mol of dicyclohexylcarbodiimide, dissolved in 400 ml of dichloromethane, the mixture is stirred at 25° C. for 20 h, the precipitated urea is filtered off with suction and flashed with 200 ml of dichloromethane, and the organic phase is washed twice each with 500 ml of 2 M hydrochloric acid and water. The organic phase is concentrated and distilled.

후처리

  1. filtrationthe precipitated urea is filtered off with suction
  2. washthe organic phase is washed twice each with 500 ml of 2 M hydrochloric acid and water
  3. concentrationThe organic phase is concentrated
  4. distillationdistilled

출처 및 근거

ORD 기록
ord-d11bec94770c4b5c9e1b124727c52863
출처 데이터셋
uspto-grants-2005_02
특허 번호
US06858622B2

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