Triethylamine → N-(5-Methylpyridin-2-yl)pivalamide

HRID 881106노트

반응식

HRID 881106 반응식
[CH3:1][C:2]1[CH:3]=[CH:4][C:5]([NH2:8])=[N:6][CH:7]=1.CCN(CC)CC.[CH3:16][C:17]([CH3:22])([CH3:21])[C:18](Cl)=[O:19]>C(Cl)Cl>[CH3:16][C:17]([CH3:22])([CH3:21])[C:18]([NH:8][C:5]1[CH:4]=[CH:3][C:2]([CH3:1])=[CH:7][N:6]=1)=[O:19]

참가 물질

5

반응물 3

HCID 8471TriethylamineHCID 153482-Amino-5-methylpyridineHCID 62493Pivaloyl chloride

생성물 1

HCID 4182924N-(5-Methylpyridin-2-yl)pivalamide수율 98.4%

시약·촉매·용매 1

HCID 6344Dichloromethane용매

실험 절차

To a stirred solution of 5-methylpyridin-2-amine (200 g, 1.85 mol) in anhydrous CH2Cl2 (1000 mL) was added dropwise a solution of Et3N (513 mL, 3.70 mol) and 2,2-dimethyl-propionyl chloride (274 mL, 2.22 mol) at 0° C. under N2. The ice bath was removed and stirring was continued at room temperature for 2 hours. The reaction was poured into ice (2000 g). The organic layer was separated and the remaining aqueous layer was extracted with CH2Cl2 (3×). The combined organics were dried over Na2SO4 and evaporated to afford 2,2-dimethyl-N-(5-methyl-pyridin-2-yl)-propionamide (350 g), which was used in the next step without further purification. 1H NMR (400 MHz, CDCl3) δ 8.12 (d, J=8.4 Hz, 1 H), 8.06 (d, J=1.2 Hz, 1 H), 7.96 (s, 1 H), 7.49 (dd, J=1.6, 8.4 Hz, 1 H), 2.27 (s, 1 H), 1.30 (s, 9 H).

후처리

  1. customThe ice bath was removed
  2. additionThe reaction was poured into ice (2000 g)
  3. customThe organic layer was separated
  4. extractionthe remaining aqueous layer was extracted with CH2Cl2 (3×)
  5. dry with materialThe combined organics were dried over Na2SO4
  6. customevaporated

출처 및 근거

ORD 기록
ord-eeee9e14fe5b467d9881dcf0888e10c2
출처 데이터셋
uspto-grants-2015_03
특허 번호
US08993600B2

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