Hydrochloric Acid → BOC-VAL-GLY-OH

HRID 1277354노트

반응식

HRID 1277354 반응식
[NH:1]([C:15]([O:17][C:18]([CH3:21])([CH3:20])[CH3:19])=[O:16])[C@H:2]([C:6]([NH:8][CH2:9][C:10]([O:12]CC)=[O:11])=[O:7])[CH:3]([CH3:5])[CH3:4].[OH-].[Na+].Cl>CO>[NH:1]([C:15]([O:17][C:18]([CH3:20])([CH3:19])[CH3:21])=[O:16])[C@H:2]([C:6]([NH:8][CH2:9][C:10]([OH:12])=[O:11])=[O:7])[CH:3]([CH3:4])[CH3:5]

참가 물질

5

반응물 3

HCID 313Hydrochloric AcidHCID 14798Sodium HydroxideHCID 12807303HCID 12807303, 화합물

생성물 1

HCID 7014901BOC-VAL-GLY-OH수율 89%

시약·촉매·용매 1

HCID 887Methanol용매

실험 절차

BOC-Val-Gly-OEt (10 g) was dissolved in 20 ml of methanol and 40 ml of 1 M sodium hydroxide was added thereto under cooling. The mixture was stirred with cooling for 15 minutes and at room temperature for an additional 45 minutes. The pH of the reaction mixture was adjusted to a pH of about 7 with 1 N hydrochloric acid and concentrated in vacuo. Water was then addedto the residue and the mixture was washed with diethyl ether. The pH of thewater layer was adjusted to a pH of about 2 with 1 N hydrochloric acid and the layer was extracted with ethyl acetate. The ethyl acetate layer was washed well with water, dried over magnesium sulfate and concentrated in vacuo. The resultant oily residue was solidified by addition of n-hexane and recrystallized from ethyl acetate-n-hexane to obtain 8.0 g (yield: 89%) of the desired material having a melting point of 101°-104° C.

후처리

  1. temperatureunder cooling
  2. concentrationconcentrated in vacuo
  3. washaddedto the residue and the mixture was washed with diethyl ether
  4. extractionthe layer was extracted with ethyl acetate
  5. washThe ethyl acetate layer was washed well with water
  6. dry with materialdried over magnesium sulfate
  7. concentrationconcentrated in vacuo
  8. additionThe resultant oily residue was solidified by addition of n-hexane
  9. customrecrystallized from ethyl acetate-n-hexane

출처 및 근거

ORD 기록
ord-c75dec5c5e5d4769b219d59de50fd079
출처 데이터셋
uspto-grants-1981_07
특허 번호
US04277393

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