Isobutyl chloroformate → N-[4-(N,N-dimethylamino)cyclohexyl]-4-(1-methyl-1,2,3,4-tetrazol-5-yl)thiobutyramide

HRID 35256

反応式

HRID 35256 の反応式
[CH3:1][N:2]1[C:6]([CH2:7][CH2:8][CH2:9][C:10](O)=[S:11])=[N:5][N:4]=[N:3]1.C1CCN2C(=NCCC2)CC1.ClC(OCC(C)C)=O.[CH3:32][N:33]([CH:35]1[CH2:40][CH2:39][CH:38]([NH2:41])[CH2:37][CH2:36]1)[CH3:34]>O1CCCC1>[CH3:32][N:33]([CH:35]1[CH2:40][CH2:39][CH:38]([NH:41][C:10](=[S:11])[CH2:9][CH2:8][CH2:7][C:6]2[N:2]([CH3:1])[N:3]=[N:4][N:5]=2)[CH2:37][CH2:36]1)[CH3:34]

参加物

6

反応物 4

HCID 62365Isobutyl chloroformateHCID 811841,8-Diazabicyclo(5.4.0)undec-7-eneHCID 345823N,N-Dimethyl-1,4-cyclohexanediamineHCID 178482013HCID 178482013、化合物

生成物 1

HCID 21295299N-[4-(N,N-dimethylamino)cyclohexyl]-4-(1-methyl-1,2,3,4-tetrazol-5-yl)thiobutyramide収率 47%

試薬・触媒・溶媒 1

HCID 8028Tetrahydrofuran溶媒

実験手順

4-(1-Methyl-1,2,3,4-tetrazol-5-yl)thio-butyric acid (45 mmole) is dissolved in tetrahydrofuran (50 ml), and thereto is added DBU (50 mmole). To the mixture is added dropwise with stirring isobutyl chloroformate (50 mmole) under ice-cooling, and the mixture is stirred at room temperature for 30 minutes. To the mixture is added dropwise 4-(N,N-dimethylamino)cyclohexylamine (54 mmole), and the mixture is further stirred at room temperature for 2 hours. After distilling off the solvent under reduced pressure, the resulting residue is extracted with chloroform. The chloroform layer is washed with 5% aqueous hydrochloric acid, an aqueous saturated sodium hydrogen carbonate solution and an aqueous saturated sodium chloride solution and then dried over anhydrous sodium sulfate. Chloroform is distilled off, and the resulting residue is subjected to silica gel column chromatography (Wakogel C-200, eluting solvent, benzene:chloroform=4:1, V/V) to isolate N-[4-(N,N-dimethylamino)cyclohexyl]-4-(1-methyl-1,2,3,4-tetrazol-5-yl)thiobutyramide (yield: 47%).

後処理

  1. temperaturecooling
  2. stirringthe mixture is further stirred at room temperature for 2 hours
  3. distillationAfter distilling off the solvent under reduced pressure
  4. extractionthe resulting residue is extracted with chloroform
  5. washThe chloroform layer is washed with 5% aqueous hydrochloric acid
  6. dry with materialan aqueous saturated sodium hydrogen carbonate solution and an aqueous saturated sodium chloride solution and then dried over anhydrous sodium sulfate
  7. distillationChloroform is distilled off
  8. washthe resulting residue is subjected to silica gel column chromatography (Wakogel C-200, eluting solvent, benzene:chloroform=4:1, V/V)

出典と根拠

ORDレコード
ord-31053b0f2ad64cb78b98dd6deb17eba0
出典データセット
uspto-grants-1988_08
特許番号
US04766120

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