Water → 1-[5-(6-Ethoxy-2-methylsulfanyl-pyrimidin-4-yl)-thiophen-2-yl]-ethanone

HRID 1455218

반응식

HRID 1455218 반응식
Cl[C:2]1[CH:7]=[C:6]([O:8][CH2:9][CH3:10])[N:5]=[C:4]([S:11][CH3:12])[N:3]=1.[C:13]([C:16]1[S:20][C:19](B(O)O)=[CH:18][CH:17]=1)(=[O:15])[CH3:14].C(=O)([O-])[O-].O>CN(C=O)C>[CH2:9]([O:8][C:6]1[N:5]=[C:4]([S:11][CH3:12])[N:3]=[C:2]([C:19]2[S:20][C:16]([C:13](=[O:15])[CH3:14])=[CH:17][CH:18]=2)[CH:7]=1)[CH3:10]

참가 물질

6

반응물 4

HCID 962Water2회HCID 19660Carbonate IonHCID 4143377(5-Acetylthiophen-2-yl)boronic acidHCID 533855534-Chloro-6-ethoxy-2-(methylthio)pyrimidine

생성물 1

HCID 673895571-[5-(6-Ethoxy-2-methylsulfanyl-pyrimidin-4-yl)-thiophen-2-yl]-ethanone수율 28%

시약·촉매·용매 1

HCID 6228Dimethylformamide용매

반응 조건

온도
80 °C

실험 절차

The crude product of Preparation 27, 4-chloro-6-ethoxy-2-methylsulfanylpyrimidine, (525 mg, 2.56 mmol) was dissolved in DMF (4 mL). To this solution was added 5-acetyl-2-thiopheneboronic acid (523 mg, 3.08 mmol), PdCl2dppf (209 mg, 0.26 mmol), potassim carbonate (1.06 g, 7.69 mmol) and water (0.4 mL). The reaction mixture was heated at 80° C. under nitrogen atmosphere for overnight. The reaction mixture was cooled and poured into 30 mL of water and was then extracted with diethyl ether (20 mL×3) three times. The ether layer was separated and dried with anhydrous MgSO4 and concentrated in vacuo. The resulting crude product was purified by flash silica column chromatography (20% ethyl acetate in hexane) to give product 1-[5-(6-ethoxy-2-methylsulfanyl-pyrimidin-4-yl)-thiophen-2-yl]-ethanone (210 mg, 28% yield over two steps). 1H-NMR (CDCl3): δ 7.67 (m, 2 H), 6.68 (s, 1 H), 4.46 (q, J=7.1 Hz, 2 H), 2.60 (s, 3 H), 2.59 (s, 3 H), 1.40 (t, J=7.1 Hz, 3 H).

후처리

  1. temperatureThe reaction mixture was cooled
  2. extractionwas then extracted with diethyl ether (20 mL×3) three times
  3. customThe ether layer was separated
  4. dry with materialdried with anhydrous MgSO4
  5. concentrationconcentrated in vacuo
  6. customThe resulting crude product was purified by flash silica column chromatography (20% ethyl acetate in hexane)

출처 및 근거

ORD 기록
ord-2406d409fd394826b21b37ae97d49c9a
출처 데이터셋
uspto-grants-2009_01
특허 번호
US07482366B2

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