Sulfuric Acid → HCID 136403421, 화합물

HRID 258122노트

반응식

HRID 258122 반응식
[CH:1]([O-:5])([O-])[O:2][CH3:3].[CH3:6]N1CCN(C)C1=O.S(=O)(=O)(O)O.[N+:19]([N:22]=[C:23]1[NH:28][CH2:27][CH2:26][CH2:25][NH:24]1)([O-:21])=[O:20]>>[CH3:6][O:5][CH:1]([O:2][CH3:3])[N:24]1[CH2:25][CH2:26][CH2:27][NH:28][C:23]1=[N:22][N+:19]([O-:21])=[O:20]

참가 물질

5

반응물 4

HCID 1118Sulfuric AcidHCID 66611,3-Dimethyl-2-imidazolidinoneHCID 53629101MethylorthoformateHCID 13624905053360-90-0

생성물 1

HCID 136403421HCID 136403421, 화합물

실험 절차

20.0 g of methyl orthoformate was dropped in about 1.5 hours in a mixture of 10 g of 2-nitroiminohexahydropyrimidine, 20 ml of 1,3-dimethyl-2-imidazolidinone and 0.05 g of sulfuric acid at 150° C., followed by heating under reflux for further 1 hour while removing the resultant distillate by means of the Dean-Stark trap. After cooling to room temperature, the mixture was poured into water, and extracted with ethyl acetate. After washing with water, the extract was dried with anhydrous magnesium sulfate, after which the solvent was distilled off under reduced pressure. The resultant oily substance was purified by column chromatography [silica gel, eluant: hexane/ethyl acetate (1:2)] to give 1.5 g of 1-dimethoxymethyl-2-nitroiminohexahydropyrimidine.

후처리

  1. temperatureby heating
  2. temperatureunder reflux for further 1 hour
  3. customwhile removing the resultant distillate by means of the Dean-Stark trap
  4. additionthe mixture was poured into water
  5. extractionextracted with ethyl acetate
  6. washAfter washing with water
  7. dry with materialthe extract was dried with anhydrous magnesium sulfate
  8. distillationafter which the solvent was distilled off under reduced pressure
  9. customThe resultant oily substance was purified by column chromatography [silica gel, eluant: hexane/ethyl acetate (1:2)]

출처 및 근거

ORD 기록
ord-38671a9206c640a1b38960cf227a32c6
출처 데이터셋
uspto-grants-1993_11
특허 번호
US05264584

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