Sodium Hydroxide → HCID 178526413, 화합물

HRID 1461328노트

반응식

HRID 1461328 반응식
[OH:1][C:2]1[C:3]([OH:16])=[N:4][C:5]2[C:6]([N:15]=1)=[C:7]1[C:12](=[CH:13][CH:14]=2)[N:11]=[CH:10][CH:9]=[N:8]1.[N+:17]([O-])([O-:19])=[O:18].[K+].[OH-].[Na+]>S(=O)(=O)(O)O>[OH:1][C:2]1[C:3]([OH:16])=[N:4][C:5]2[C:6]([N:15]=1)=[C:7]1[C:12](=[C:13]([N+:17]([O-:19])=[O:18])[CH:14]=2)[N:11]=[CH:10][CH:9]=[N:8]1

참가 물질

5

반응물 3

HCID 14798Sodium HydroxideHCID 24434Potassium NitrateHCID 178516995HCID 178516995, 화합물

생성물 1

HCID 178526413HCID 178526413, 화합물수율 47%

시약·촉매·용매 1

HCID 1118Sulfuric Acid용매

실험 절차

To a solution of 0,38 g (1,4 mmol) 2,3-dihydroxy-pyrazino(2,3-f)quinoxaline in 25 ml concentrated sulfuric acid was added at 0° C. 0,28 g (2,8 mmol) potassium nitrate. Stirring was continued at 0° C. for 30 min. and at 25° C. for 24 h. The reaction mixture was poured into 100 ml ice-water. The solution was added 10N sodium hydroxide to pH 7, and then extracted with ethyl acetate (5×100 ml). The combined and dried ethyl acetate phases were evaporated to give 0,17 g (47%) 2,3-dihydroxy-6-nitropyrazino(2,3-f)quinoxaline, m.p.>300° C. NMR (DMSO-d6): 9.10 (2H,s), 8.23 (1H,s).

후처리

  1. extractionextracted with ethyl acetate (5×100 ml)
  2. customdried ethyl acetate phases were evaporated

출처 및 근거

ORD 기록
ord-dc223ba3771c4f2a987ca940f5857f70
출처 데이터셋
uspto-grants-1991_12
특허 번호
US05075306

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