2,6-Lutidine → HCID 23282697, 화합물

HRID 369831노트

반응식

HRID 369831 반응식
[Br-].[CH2:2]([N+:9]1[CH:14]=[CH:13][CH:12]=[CH:11][C:10]=1[Br:15])[C:3]1[CH:8]=[CH:7][CH:6]=[CH:5][CH:4]=1.[CH2:16]([O:18][C:19]([C:21]1[CH:25]=[CH:24][NH:23][C:22]=1[NH2:26])=[O:20])[CH3:17].N1C(C)=CC=CC=1C>C(Cl)Cl>[Br-:15].[NH2:26][C:22]1[NH:23][C:24]([C:10]2[CH:11]=[CH:12][CH:13]=[CH:14][N+:9]=2[CH2:2][C:3]2[CH:8]=[CH:7][CH:6]=[CH:5][CH:4]=2)=[CH:25][C:21]=1[C:19]([O:18][CH2:16][CH3:17])=[O:20]

참가 물질

5

반응물 3

HCID 79372,6-LutidineHCID 12111022Ethyl 2-amino-1H-pyrrole-3-carboxylate2회HCID 12552152HCID 12552152, 화합물

생성물 1

HCID 23282697HCID 23282697, 화합물

시약·촉매·용매 1

HCID 6344Dichloromethane용매

실험 절차

Under an argon atmosphere, 658 mg (2.0 mmol) of N-benzyl-2-bromo-pyridinium bromide (for preparation see: J. Heterocyclic Chem. 28, 1083 (1991)) are introduced into 20 ml of abs. methylene chloride, and 308 mg (2.0 mmol) of 2-amino-pyrrole-3-carboxylic acid ethyl ester [for preparation see: J. Heterocyclic Chem. 23, 1555 (1986)] are added thereto. The reaction mixture is stirred for 2 days with the exclusion of light. Since the reaction is not complete, 232 μl (2 mmol) of 2,6-lutidine and a further 0.20 mmol of 2-amino-pyrrole-3-carboxylic acid ethyl ester are added. After a further 12 hours' stirring, the reaction mixture is concentrated by evaporation and the residue is digested in isopropanol. Filtering, washing with hexane and drying yield the title compound which, according to its 1H-NMR spectrum, still contains approximately 10% N-benzyl-2-bromo-pyridinium bromide; 1H-NMR (300 MHz, DMSO-d6): 11.45 (1H), 8.70 (d, J=7, 1H), 8.38 (t, J=7, 1H), 8.00 (d, J=7, 1H), 7.67 (t, J=7, 1H), 7.42 (m, 3H), 7.14 (d, J=7, 2H), 6.85 (d, J=3, 1H), 6.45 (sb, 2H), 5.91 (s, 2H), 4.13 (q, J=7, 2H), 1.19 (t, J=7, 3H); FAB-MS: (M+H)+ =322.

후처리

  1. stirringAfter a further 12 hours' stirring
  2. concentrationthe reaction mixture is concentrated by evaporation
  3. filtrationFiltering
  4. washwashing with hexane
  5. customdrying

출처 및 근거

ORD 기록
ord-99c38aa063b949b2b3bbc779ac75062e
출처 데이터셋
uspto-grants-2000_10
특허 번호
US06140332

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