Triethylamine → 1-Oxo-1-(2-(pyrrolidin-1-yl)cyclopent-1-enyl)propan-2-yl acetate

HRID 1773831

반응식

HRID 1773831 반응식
[C:1]([O:4][CH:5]([CH3:9])[C:6](Cl)=[O:7])(=[O:3])[CH3:2].[C:10]1([N:15]2[CH2:19][CH2:18][CH2:17][CH2:16]2)[CH2:14][CH2:13][CH2:12][CH:11]=1.C(N(CC)CC)C>C1(C)C=CC=CC=1>[C:1]([O:4][CH:5]([CH3:9])[C:6](=[O:7])[C:11]1[CH2:12][CH2:13][CH2:14][C:10]=1[N:15]1[CH2:19][CH2:18][CH2:17][CH2:16]1)(=[O:3])[CH3:2]

참가 물질

5

반응물 3

HCID 8471TriethylamineHCID 81570Pyrrolidine, 1-(1-cyclopenten-1-yl)-HCID 45474922-Acetoxypropionyl Chloride

생성물 1

HCID 710141241-Oxo-1-(2-(pyrrolidin-1-yl)cyclopent-1-enyl)propan-2-yl acetate수율 95.2%

시약·촉매·용매 1

HCID 1140Toluene용매2회

실험 절차

Add dropwise a solution of 1-chloro-1-oxopropan-2-yl acetate (600 g, 3.98 mol) in toluene (1200 mL) to a solution of 1-cyclopent-1-enyl-pyrrolidine (546.7 g, 3.98 mol) and triethyl amine (483.9 g, 4.78 mol) in toluene (2400 mL). Reflux the mixture for overnight. Filter the mixture and concentrate the filtration to give crude 1-oxo-1-(2-(pyrrolidin-1-yl)cyclopent-1-enyl)propan-2-yl acetate (952 g), which is used in next step without further purification. 1H NMR (CDCl3, 400 MHz): δ 5.27 (m, 1H), 3.56 (m, 2H), 3.16 (m, 2H), 2.83 (m, 1H), 2.58 (m, 3H), 2.10 (s, 3H), 1.93 (m, 2H), 1.82 (m, 4H), 1.36 (d, J=7.2, 3H).

후처리

  1. temperatureReflux the mixture for overnight
  2. filtrationFilter the mixture
  3. concentrationconcentrate
  4. filtrationthe filtration

출처 및 근거

ORD 기록
ord-d544f0478b2d41d1b3c343d703cc754b
출처 데이터셋
uspto-grants-2016_02
특허 번호
US09255111B2

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