Hydrochloric Acid → 2-Methoxybenzyl 3-[[N-(3,4-Dimethoxyphenethyl)]amino]-2-hydroxypropionate

HRID 1995682노트

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HRID 1995682 반응식
[CH3:1][O:2][C:3]1[CH:4]=[C:5]([CH:15]=[CH:16][C:17]=1[O:18][CH3:19])[CH2:6][CH2:7][NH:8][CH2:9][CH:10]([OH:14])[C:11]([OH:13])=[O:12].[CH3:20][O:21][C:22]1[CH:29]=[CH:28][CH:27]=[CH:26][C:23]=1[CH2:24]O.Cl>C1C=CC=CC=1>[CH3:1][O:2][C:3]1[CH:4]=[C:5]([CH:15]=[CH:16][C:17]=1[O:18][CH3:19])[CH2:6][CH2:7][NH:8][CH2:9][CH:10]([OH:14])[C:11]([O:13][CH2:24][C:23]1[CH:26]=[CH:27][CH:28]=[CH:29][C:22]=1[O:21][CH3:20])=[O:12]

참가 물질

5

반응물 3

HCID 313Hydrochloric AcidHCID 691542-Methoxybenzyl alcoholHCID 132310073-(3,4-Dimethoxyphenethyl)amino-2-hydroxypropionic acid

생성물 1

HCID 202406622-Methoxybenzyl 3-[[N-(3,4-Dimethoxyphenethyl)]amino]-2-hydroxypropionate수율 23%

시약·촉매·용매 1

HCID 241Benzene용매

실험 절차

To 3 g of the 3-(3,4-dimethoxyphenethyl)amino-2-hydroxypropionic acid prepared in Example I was added 200 ml of benzene and 20 ml of 2-methoxybenzyl alcohol. About 0.5 ml of concentrated HCl was added to catalyze the reaction. The reaction mixture was heated to reflux for 6 hours and the water was collected by a moisture trap. The reaction mixture was extracted with 200 ml of 0.5% HCl in water. The aqueous layer was basified with NaHCO3 and extracted with CHCl3. Evaporation of the CHCl3 gave an oily residue which after chromotography on a column (silica gel/Et2O:EtOH=5:1) gave 1 g (23%) of white solid: m.p. 79.5°-82.5° C. The NMR, IR and mass spectra were consistent with the assigned structure and the elemental analysis was consistent with the empirical formula C21H27O6N.

후처리

  1. customthe reaction
  2. temperatureThe reaction mixture was heated
  3. temperatureto reflux for 6 hours
  4. customthe water was collected by a moisture trap
  5. extractionThe reaction mixture was extracted with 200 ml of 0.5% HCl in water
  6. extractionextracted with CHCl3
  7. customEvaporation of the CHCl3
  8. customgave an oily residue which after chromotography on a column (silica gel/Et2O:EtOH=5:1)

출처 및 근거

ORD 기록
ord-8995b115f1bd4d3d8914d2d7646323c4
출처 데이터셋
uspto-grants-1983_09
특허 번호
US04405642

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