tert-Butyl piperazine-1-carboxylate → t-Butyl 4-(6-chloromethylpyridin-2-ylmethyl)piperazine-1-carboxylate

HRID 1172240노트

반응식

HRID 1172240 반응식
Cl[CH2:2][C:3]1[CH:8]=[CH:7][CH:6]=[C:5]([CH2:9][Cl:10])[N:4]=1.[C:11]([O:15][C:16]([N:18]1[CH2:23][CH2:22][NH:21][CH2:20][CH2:19]1)=[O:17])([CH3:14])([CH3:13])[CH3:12]>C(O)C>[Cl:10][CH2:9][C:5]1[N:4]=[C:3]([CH2:2][N:21]2[CH2:20][CH2:19][N:18]([C:16]([O:15][C:11]([CH3:14])([CH3:13])[CH3:12])=[O:17])[CH2:23][CH2:22]2)[CH:8]=[CH:7][CH:6]=1

참가 물질

4

반응물 2

HCID 143452tert-Butyl piperazine-1-carboxylateHCID 3166542,6-Bis(chloromethyl)pyridine

생성물 1

HCID 58105228t-Butyl 4-(6-chloromethylpyridin-2-ylmethyl)piperazine-1-carboxylate수율 38.4%

시약·촉매·용매 1

HCID 702Ethanol용매

실험 절차

2,6-Bis(chloromethyl)pyridine (352 mg) was suspended in 4 mL of ethanol, and 372 mg of N-(t-butoxycarbonyl)piperazine was added into the suspension at ice temperature, and then the suspension was stirred at room temperature overnight. The reaction mixture was concentrated under reduced pressure, the residue was added to water and extracted with chloroform. The organic layer was washed with brine, dried over anhydrous magnesium sulfate, and the solvent was removed. The residue was purified by chromatography on silica gel (methylene chloride-ethanol=30:1) to give 250 mg of t-butyl 4-(6-chloromethylpyridin-2-ylmethyl)piperazine-1-carboxylate as a colorless oil.

후처리

  1. concentrationThe reaction mixture was concentrated under reduced pressure
  2. additionthe residue was added to water
  3. extractionextracted with chloroform
  4. washThe organic layer was washed with brine
  5. dry with materialdried over anhydrous magnesium sulfate
  6. customthe solvent was removed
  7. customThe residue was purified by chromatography on silica gel (methylene chloride-ethanol=30:1)

출처 및 근거

ORD 기록
ord-121de2dfe1c348688735dfe174298699
출처 데이터셋
uspto-grants-2010_11
특허 번호
US07834002B2

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