1-Benzyl 4-ethyl (2R)-2-methylpiperazine-1,4-dicarboxylate → Ethyl (3R)-3-methylpiperazine-1-carboxylate

HRID 1970543노트

반응식

HRID 1970543 반응식
[CH2:1]([O:3][C:4]([N:6]1[CH2:11][CH2:10][N:9](C(OCC2C=CC=CC=2)=O)[C@H:8]([CH3:22])[CH2:7]1)=[O:5])[CH3:2]>C(OCC)(=O)C.[Pd]>[CH2:1]([O:3][C:4]([N:6]1[CH2:11][CH2:10][NH:9][C@H:8]([CH3:22])[CH2:7]1)=[O:5])[CH3:2]

참가 물질

4

반응물 1

HCID 668549451-Benzyl 4-ethyl (2R)-2-methylpiperazine-1,4-dicarboxylate

생성물 1

HCID 45099579Ethyl (3R)-3-methylpiperazine-1-carboxylate

시약·촉매·용매 2

HCID 23938Palladium촉매HCID 8857Ethyl Acetate용매

실험 절차

A suspension of 3.0 g (R)-2-Methyl-piperazine-1,4-dicarboxylic acid 1-benzyl ester 4-ethyl ester and 0.4 g Pd/C (10%) in 48 ml ethyl acetate was stirred under an atmosphere of hydrogen (3 bar) for 12 h. The mixture was filtrated over a plug of Celite, washed with ethyl acetate and the combined wash solutions concentrated to give the title compound as colourless oil. Yield: 1.5 g.

후처리

  1. filtrationThe mixture was filtrated over a plug of Celite
  2. washwashed with ethyl acetate
  3. concentrationthe combined wash solutions concentrated

출처 및 근거

ORD 기록
ord-89caeaccb19b47a69283a07e46931ebe
출처 데이터셋
uspto-grants-2013_04
특허 번호
US08426420B2

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