(R)-phenylmethyl-[1-methyl-2-oxo-2-(1H-pyrrol-1-ylamino)ethyl]carbamate → (R)-2-Amino-N-1H-pyrrol-1-ylpropanamide
반응식
C1(COC(=O)[NH:10][C@H:11]([CH3:20])[C:12](=[O:19])[NH:13][N:14]2[CH:18]=[CH:17][CH:16]=[CH:15]2)C=CC=CC=1>[Pd].CO>[NH2:10][C@H:11]([CH3:20])[C:12]([NH:13][N:14]1[CH:18]=[CH:17][CH:16]=[CH:15]1)=[O:19]참가 물질
4
실험 절차
The CBZ group of (R)-phenylmethyl-[1-methyl-2-oxo-2-(1H-pyrrol-1-ylamino)ethyl]carbamate (5.13 g) was cleaved in a minimal volume of methanol over 5% Pd-C (1.03 g) with H2 (g) (436 ml) under atmospheric conditions. The catalyst was removed by filtration through a pad of celite and the filter cake was washed with methanol. The combined filtrates were concentrated and the residue purified via flash column chromatography (silica gel, 30% EtOH/EtOAc), affording 2.11 g of the product as a oil which crystallized on standing, m.p. 63°-66° C.
후처리
- customThe catalyst was removed by filtration through a pad of celite
- washthe filter cake was washed with methanol
- concentrationThe combined filtrates were concentrated
- customthe residue purified via flash column chromatography (silica gel, 30% EtOH/EtOAc)
출처 및 근거
- ORD 기록
- ord-ec9a3e533d204b198a75e7a1ddf6ecff
- 출처 데이터셋
- uspto-grants-1997_02
- 특허 번호
- US05605925
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