Water → N-[4-Chloro-2-(2-methyl-pyridine-3-carbonyl)-phenyl]-2,2-dimethyl-propionamide

HRID 29511노트

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HRID 29511 반응식
[Cl:1][C:2]1[CH:7]=[CH:6][C:5]([NH:8][C:9](=[O:14])[C:10]([CH3:13])([CH3:12])[CH3:11])=[CH:4][CH:3]=1.[CH2:15]([Li])[CH2:16][CH2:17][CH3:18].[OH2:20]>C1COCC1.CCCCCC>[Cl:1][C:2]1[CH:3]=[CH:4][C:5]([NH:8][C:9](=[O:14])[C:10]([CH3:11])([CH3:13])[CH3:12])=[C:6]([C:15]([C:16]2[C:5]([CH3:4])=[N:8][CH:9]=[CH:18][CH:17]=2)=[O:20])[CH:7]=1

참가 물질

6

반응물 3

HCID 962WaterHCID 182511Propanamide, N-(4-chlorophenyl)-2,2-dimethyl-HCID 178418339Butyllithium

생성물 1

HCID 22327308N-[4-Chloro-2-(2-methyl-pyridine-3-carbonyl)-phenyl]-2,2-dimethyl-propionamide

시약·촉매·용매 2

HCID 8028Tetrahydrofuran용매2회HCID 8058Hexane용매

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온도
0 °C

실험 절차

To a magnetically stirred solution of N-(4-chloro-phenyl)-2,2-dimethyl-propionamide (3.16 g, 14.9 mmol) in dry THF was added 2.5M n-butyllithium in hexane at −40° C. and the mixture was stirred at 0° C. for 2 h and a suspension of white solid resulted. A solution of the Weinreb amide (1.80 g, 10.0 mmol) in dry THF was added drop wise and the reaction was stirred at ambient temp overnight. The mixture was diluted with water and extracted with ethyl acetate and the organic layer was dried (MgSO4), filtered and concentrated. Chromatography on silica gel (20-30% EtOAc/Hexane) provided the desired N-[4-Chloro-2-(2-methyl-pyridine-3-carbonyl)-phenyl]-2,2-dimethyl-propionamide as a waxy bright yellow solid (2.28 g, 6.89 mmol): 1H NMR (CDCl3) δ 11.71 (s, 1H, NH), 8.82 (d, 1H, J=9.2 Hz), 8.67 (dd, 1H, J=4.8 Hz, J=1.8 Hz), 7.55 (m, 2H), 7.28 (d, 1H, J=2.5 Hz), 7.25 (m, 1H), 2.54 (s, 3H), 1.39 (s, 9H).

후처리

  1. additiona suspension of white solid
  2. customresulted
  3. stirringthe reaction was stirred at ambient temp overnight
  4. extractionextracted with ethyl acetate
  5. dry with materialthe organic layer was dried (MgSO4)
  6. filtrationfiltered
  7. concentrationconcentrated

출처 및 근거

ORD 기록
ord-045032e4abc74808984b8e34a83d14cc
출처 데이터셋
uspto-grants-2008_09
특허 번호
US07420055B2

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