Sulfuric Acid → 5-(3,4-dichlorophenyl)-2,3,5,6-tetrahydro-1H-imidazo[1,2-a]imidazole hydrochloride

HRID 1658256노트

반응식

HRID 1658256 반응식
[Cl:1][C:2]1[CH:3]=[C:4]([CH:14]=[CH:15][C:16]=1[Cl:17])[CH:5](O)[CH2:6][NH:7][C:8]1[NH:9][CH2:10][CH2:11][N:12]=1.S(=O)(=O)(O)O.[OH-].[Na+]>>[ClH:1].[Cl:1][C:2]1[CH:3]=[C:4]([CH:5]2[N:12]3[CH2:11][CH2:10][NH:9][C:8]3=[N:7][CH2:6]2)[CH:14]=[CH:15][C:16]=1[Cl:17]

참가 물질

4

반응물 3

HCID 1118Sulfuric AcidHCID 14798Sodium HydroxideHCID 540921273,4-Dichloro-alpha-(2-imidazolin-2-ylaminomethyl)benzyl alcohol

생성물 1

HCID 215290445-(3,4-dichlorophenyl)-2,3,5,6-tetrahydro-1H-imidazo[1,2-a]imidazole hydrochloride

실험 절차

4.3 parts of 3,4-dichloro-α-(2-imidazolin-2-ylaminomethyl)benzyl alcohol are added portionwise to 16.2 parts of sulfuric acid solution 80% while stirring and cooling. Upon completion, the mixture is stirred for 2 hr. 30 min. at room temperature. The reaction mixture is poured onto ice-water, alkalized with concentrated sodium hydroxide solution and the product in base form is extracted with methylene chloride. The organic layer is dried, filtered and evaporated. The residue is converted into the hydrochloride salt in 2-propanol, yielding 5-(3,4-dichlorophenyl)-2,3,5,6-tetrahydro-1H-imidazo[1,2-a]imidazole hydrochloride; m.p. 298.4°C (dec.).

후처리

  1. temperaturecooling
  2. stirringUpon completion, the mixture is stirred for 2 hr
  3. custom30 min.
  4. customat room temperature
  5. additionThe reaction mixture is poured onto ice-water
  6. extractionthe product in base form is extracted with methylene chloride
  7. customThe organic layer is dried
  8. filtrationfiltered
  9. customevaporated

출처 및 근거

ORD 기록
ord-ecced284432843a59edf1606cee6fd01
출처 데이터셋
uspto-grants-1976_06
특허 번호
US03963718

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