2-(2-Cyano-3-methylamino-4-nitrophenyl)-2-methyl-3-oxobutyric acid ethyl ester → 2-(4-Amino-2-cyano-3-methylamino-phenyl)-2-methyl-3-oxo-butyric acid ethyl ester

HRID 562422노트

반응식

HRID 562422 반응식
[CH2:1]([O:3][C:4](=[O:23])[C:5]([C:10]1[CH:15]=[CH:14][C:13]([N+:16]([O-])=O)=[C:12]([NH:19][CH3:20])[C:11]=1[C:21]#[N:22])([CH3:9])[C:6](=[O:8])[CH3:7])[CH3:2]>CCOC(C)=O.[Pd]>[CH2:1]([O:3][C:4](=[O:23])[C:5]([C:10]1[CH:15]=[CH:14][C:13]([NH2:16])=[C:12]([NH:19][CH3:20])[C:11]=1[C:21]#[N:22])([CH3:9])[C:6](=[O:8])[CH3:7])[CH3:2]

참가 물질

4

반응물 1

HCID 120354712-(2-Cyano-3-methylamino-4-nitrophenyl)-2-methyl-3-oxobutyric acid ethyl ester

생성물 1

HCID 110661612-(4-Amino-2-cyano-3-methylamino-phenyl)-2-methyl-3-oxo-butyric acid ethyl ester수율 107%

시약·촉매·용매 2

HCID 23938Palladium촉매HCID 8857Ethyl Acetate용매

실험 절차

To a 500 mL Parr pressure flask was added 2-(2-cyano-3-methylamino-4-nitro-phenyl)-2-methyl-3-oxo-butyric acid ethyl ester (7.13 g, 16.5 mmol) as a solution in EtOAc (50 mL) followed by 10% palladium on carbon (1.0 g). The flask was purged under vacuum, then charged with hydrogen gas (50 psi). The flask was agitated at room temperature for while open to the ballast (caution: potential exotherm). After 8 hours, TLC analysis indicated that all starting material has been consumed. The reaction mixture was filtered through a pad of celite and washed with EtOAc. The resulting solution was concentrated to provide 2-(4-amino-2-cyano-3-methylamino-phenyl)-2-methyl-3-oxo-butyric acid ethyl ester (5.11 g, 77%) as a gray solid, which was used without further purification. 1H NMR (400 MHz, d6-DMSO) δ 6.70 (d, J=8.2 Hz, 1H), 6.33 (d, J=8.2 Hz, 1H), 6.17 (s, 2H), 4.90 (q, J1=5.1 Hz, J2=10.6 Hz, 1H), 4.21-4.15 (m, 2H), 2.95 (d, J=5.5 Hz, 2H), 2.22 (s, 3H), 1.66 (s, 3H), 1.2 (t, J=7.0 Hz, 3H).

후처리

  1. customThe flask was purged under vacuum
  2. additioncharged with hydrogen gas (50 psi)
  3. customhas been consumed
  4. filtrationThe reaction mixture was filtered through a pad of celite
  5. washwashed with EtOAc
  6. concentrationThe resulting solution was concentrated

출처 및 근거

ORD 기록
ord-73c899da47704f3db4074453d5c03a06
출처 데이터셋
uspto-grants-2011_11
특허 번호
US08067395B2

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