Hydrazine hydrate (1:1) → 5-Methyl-5-trifluoromethyl-pyrazolidin-3-one

HRID 240488노트

반응식

HRID 240488 반응식
C([O:3][C:4](=O)[CH:5]=[C:6]([CH3:11])[C:7]([F:10])([F:9])[F:8])C.O.[NH2:14][NH2:15]>C(O)C>[CH3:11][C:6]1([C:7]([F:10])([F:9])[F:8])[NH:15][NH:14][C:4](=[O:3])[CH2:5]1

참가 물질

4

반응물 2

HCID 24654Hydrazine hydrate (1:1)HCID 342470Ethyl 4,4,4-trifluoro-3-methyl-2-butenoate

생성물 1

HCID 2872535-Methyl-5-trifluoromethyl-pyrazolidin-3-one

시약·촉매·용매 1

HCID 702Ethanol용매2회

반응 조건

온도
80 °C

실험 절차

(300 mg, 1.65 mmol) 4,4,4-Trifluoro-3-methyl-but-2-enoic acid ethyl ester (CAS 24490-03-7) was dissolved in ethanol (3 ml) and hydrazine monohydrate 64% in ethanol (0.13 ml, 1.73 mmol, 1.05 equiv.) was added at room temperature and stirred in a sealed tube for 16 hours at 80° C. The reaction mixture was evaporated to dryness. The desired (RS)-5-methyl-5-trifluoromethyl-pyrazolidin-3-one (280 mg, quant.) was obtained as a white solid, MS: m/e=169.2 (M+H+).

후처리

  1. customThe reaction mixture was evaporated to dryness

출처 및 근거

ORD 기록
ord-63b613c9e5434d1e91a16e0665d8827c
출처 데이터셋
uspto-grants-2014_02
특허 번호
US08648088B2

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