4-Aminophenol → ethyl N-(4-hydroxyphenyl)carbamate

HRID 1649932노트

반응식

HRID 1649932 반응식
[CH:1]1[C:6]([NH2:7])=[CH:5][CH:4]=[C:3]([OH:8])[CH:2]=1.[OH-].[Na+].[CH2:11]([O:13][C:14](Cl)=[O:15])[CH3:12].S(S([O-])=O)([O-])=O.[Na+].[Na+]>O>[CH2:11]([O:13][C:14]([NH:7][C:6]1[CH:5]=[CH:4][C:3]([OH:8])=[CH:2][CH:1]=1)=[O:15])[CH3:12]

참가 물질

6

반응물 4

HCID 4034-AminophenolHCID 10928Ethyl chloroformateHCID 14798Sodium HydroxideHCID 24489Sodium Dithionite

생성물 1

HCID 602288ethyl N-(4-hydroxyphenyl)carbamate

시약·촉매·용매 1

HCID 962Water용매

실험 절차

p-aminophenol 33.36 g (0.3 mole) and 12 g NaOH were dissolved in 120 ml water and cooled to ice salt bath temperature. To the stirring solution, 24 ml ethylchloroformate were slowly added. A white precipitate was found. One gram sodium dithionite was added and mixed. The solid was filtered by suction and washed with cold water (50 ml). Recrystallization from hot water gave a crystalline powder, 48.3 g (89%), MP 120-123°.

후처리

  1. temperaturecooled to ice salt bath temperature
  2. additionmixed
  3. filtrationThe solid was filtered by suction
  4. washwashed with cold water (50 ml)
  5. customRecrystallization from hot water
  6. customgave a crystalline powder, 48.3 g (89%), MP 120-123°

출처 및 근거

ORD 기록
ord-f6f7308b40f44e82ab684df71b17070a
출처 데이터셋
uspto-grants-1990_05
특허 번호
US04921997

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