Methyl propiolate → 1,2,3,5-Tetrahydro-1-(2-chloro-5-pyridylmethyl)-8-nitroimidazo[1,2-a]pyridin-5-one

HRID 484302

반응식

HRID 484302 반응식
[N+:1]([CH:4]=[C:5]1[N:9]([CH2:10][C:11]2[CH:12]=[CH:13][C:14]([Cl:17])=[N:15][CH:16]=2)[CH2:8][CH2:7][NH:6]1)([O-:3])=[O:2].C[O:19][C:20](=O)[C:21]#[CH:22]>CO>[Cl:17][C:14]1[CH:13]=[CH:12][C:11]([CH2:10][N:9]2[C:5]3=[C:4]([N+:1]([O-:3])=[O:2])[CH:22]=[CH:21][C:20](=[O:19])[N:6]3[CH2:7][CH2:8]2)=[CH:16][N:15]=1

참가 물질

4

반응물 2

HCID 13536Methyl propiolateHCID 1809572-Chloro-5-{[2-(nitromethylidene)imidazolidin-1-yl]methyl}pyridine

생성물 1

HCID 146756711,2,3,5-Tetrahydro-1-(2-chloro-5-pyridylmethyl)-8-nitroimidazo[1,2-a]pyridin-5-one수율 52.3%

시약·촉매·용매 1

HCID 887Methanol용매

실험 절차

A mixed solution of 2-nitromethylene-3-(2-chloro-5-pyridylmethyl) imidazolidine (12.7 g), propiolic acid methylester (4.2 g) and methanol (100 ml) was refluxed under heating for about 20 hours. Subsequently methanol was distilled off under reduced pressure, and the residue was refined by a silica-gel column chromatography to give the desired 1,2,3,5-tetrahydro-1-(2-chloro-5-pyridylmethyl)-8-nitroimidazo[1,2-a] pyridin-5-one (8 g).

후처리

  1. temperatureunder heating for about 20 hours
  2. distillationSubsequently methanol was distilled off under reduced pressure

출처 및 근거

ORD 기록
ord-7332bb4a12004280a40aa3bfc686f3fa
출처 데이터셋
uspto-grants-1993_07
특허 번호
US05231098

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