Hydrochloric Acid → 2-Methyl-2-(1-methylpiperidin-3-yl)propanoic acid

HRID 2237748노트

반응식

HRID 2237748 반응식
C[O:2][C:3](=[O:14])[C:4]([CH3:13])([CH:6]1[CH2:11][CH2:10][CH2:9][N:8]([CH3:12])[CH2:7]1)[CH3:5].[OH-].[Li+].Cl>CO>[CH3:13][C:4]([CH:6]1[CH2:11][CH2:10][CH2:9][N:8]([CH3:12])[CH2:7]1)([CH3:5])[C:3]([OH:14])=[O:2]

참가 물질

5

반응물 3

HCID 313Hydrochloric AcidHCID 3939Lithium HydroxideHCID 668891612-Methyl-2-(1-methyl-piperidin-3(r,s)-yl)-propionic acid methyl ester

생성물 1

HCID 668879152-Methyl-2-(1-methylpiperidin-3-yl)propanoic acid

시약·촉매·용매 1

HCID 887Methanol용매

실험 절차

0.200 g of 2-methyl-2-(1-methyl-piperidin-3(R,S)-yl)-propionic acid methyl ester are dissolved in 4 ml of methanol. 4 ml of a 1M aqueous lithium hydroxide solution are added and the mixture is stirred for 16 hours at room temperature. The reaction mixture is neutralised with 1M HCl and extracted with ethyl acetate (3×50 ml). The organic phases are combined and concentrated by evaporation. The residue is purified by means of flash chromatography (SiO2 60F) to provide the title compound as a colourless oil. Rf 0.15 (150:54:10:1 dichloromethane-methanol-acetic acid-water).

후처리

  1. extractionextracted with ethyl acetate (3×50 ml)
  2. concentrationconcentrated by evaporation
  3. customThe residue is purified by means of flash chromatography (SiO2 60F)

출처 및 근거

ORD 기록
ord-60558e219e82451e913faedc4e4ade57
출처 데이터셋
uspto-grants-2010_05
특허 번호
US07718675B2

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