Hydrochloric Acid → Ethyl 3-carboxy-1,4-dimethyl-5-(p-toluoyl)-pyrrole-2-acetate

HRID 1585613노트

반응식

HRID 1585613 반응식
[C:1]([C:4]1[C:8]([CH3:9])=[C:7]([C:10]([C:12]2[CH:17]=[CH:16][C:15]([CH3:18])=[CH:14][CH:13]=2)=[O:11])[N:6]([CH3:19])[C:5]=1[CH2:20][C:21]([OH:23])=[O:22])([OH:3])=[O:2].Cl.[CH2:25](O)[CH3:26]>>[C:1]([C:4]1[C:8]([CH3:9])=[C:7]([C:10]([C:12]2[CH:17]=[CH:16][C:15]([CH3:18])=[CH:14][CH:13]=2)=[O:11])[N:6]([CH3:19])[C:5]=1[CH2:20][C:21]([O:23][CH2:25][CH3:26])=[O:22])([OH:3])=[O:2]

참가 물질

4

반응물 3

HCID 313Hydrochloric AcidHCID 702EthanolHCID 184243523-Carboxy-1,4-dimethyl-5-(p-toluoyl)-pyrrole-2-acetic acid

생성물 1

HCID 18424327Ethyl 3-carboxy-1,4-dimethyl-5-(p-toluoyl)-pyrrole-2-acetate

실험 절차

A solution of 37 g. (0.118 mole) of 3-carboxy-1,4-dimethyl-5-(p-toluoyl)-pyrrole-2 -acetic acid in 370 ml. of ethanol containing 1.8 g. of dry hydrogen chloride is heated under reflux for 45 minutes. The solution is cooled, and the solid which precipitated, ethyl 3 -carboxy-1,4-dimethyl-5-(o-toluoyl)-pyrrole-2-acetate, is collected, m.p. 200-202° C.

후처리

  1. temperatureunder reflux for 45 minutes
  2. temperatureThe solution is cooled
  3. customthe solid which precipitated
  4. customethyl 3 -carboxy-1,4-dimethyl-5-(o-toluoyl)-pyrrole-2-acetate, is collected

출처 및 근거

ORD 기록
ord-7efc3fbfe9af43ba9ec5359901e63257
출처 데이터셋
uspto-grants-1999_08
특허 번호
US05939417

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