HCID 66935459, 화합물 → HCID 66935781, 화합물

HRID 1908794노트

반응식

HRID 1908794 반응식
[CH2:1]([O:3][C:4](=[O:17])[C:5]1[CH:10]=[C:9](Cl)[C:8]([N:12]([CH2:15][CH3:16])[CH2:13][CH3:14])=[N:7][CH:6]=1)[CH3:2].[CH2:18]([Zn]CC)[CH3:19]>O1CCOCC1.C1(C)C=CC=CC=1>[CH2:1]([O:3][C:4](=[O:17])[C:5]1[CH:10]=[C:9]([CH2:18][CH3:19])[C:8]([N:12]([CH2:15][CH3:16])[CH2:13][CH3:14])=[N:7][CH:6]=1)[CH3:2]

참가 물질

5

반응물 2

HCID 66935459HCID 66935459, 화합물HCID 178418750HCID 178418750, 화합물2회

생성물 1

HCID 66935781HCID 66935781, 화합물

시약·촉매·용매 2

HCID 1140Toluene용매2회HCID 312751,4-Dioxane용매

실험 절차

To a solution of 5-chloro-6-diethylamino-nicotinic acid ethyl ester (2.96 g, 11.5 mmol) in dioxane (50 mL), Pd(dppf) (470 mg, 0.576 mmol) is added under argon. To this mixture, diethyl zinc (8.53 g, 69.1 mmol, as a 1.1 M solution in toluene) is added dropwise. The mixture is stirred at 75° C. for 16 h before another portion of Pd(dppf) 94 mg, 0.115 mmol) and diethyl zinc (1.42 g, 11.5 mmol, as a 1.1 M solution in toluene) is added. Stirring is continued at 75° C. for 24 h. The reaction mixture is cooled to rt and carefully quenched with water. The mixture is filtered over celite and the filtrate is extracted twice with EA. The combined org. extracts are dried over MgSO4, filtered and concentrated. The crude product is purified by CC (heptane:EA 9:1) to give 6-diethylamino-5-ethyl-nicotinic acid ethyl ester (2.40 g) as a colourless oil; LC-MS: tR=0.78 min, [M+1]+=251.19; 1H NMR (CDCl3): δ 1.15 (t, J=7.0 Hz, 6H), 1.27 (t, J=7.3 Hz, 3H), 1.40 (t, J=7.3 Hz, 3H), 2.65 (q, J=7.5 Hz, 2H), 3.36 (q, J=7.0 Hz, 4H), 4.37 (q, J=7.0 Hz, 2H), 7.99 (d, J=2.3 Hz, 1H), 8.76 (d, J=2.3 Hz, 1H).

후처리

  1. customcarefully quenched with water
  2. filtrationThe mixture is filtered over celite
  3. extractionthe filtrate is extracted twice with EA
  4. dry with materialextracts are dried over MgSO4
  5. filtrationfiltered
  6. concentrationconcentrated
  7. customThe crude product is purified by CC (heptane:EA 9:1)

출처 및 근거

ORD 기록
ord-c681151879a74196ac490b0ef22697b0
출처 데이터셋
uspto-grants-2013_12
특허 번호
US08598208B2

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