Diethyl Ether → HCID 21072857, 화합물

HRID 2223105노트

반응식

HRID 2223105 반응식
C(O[C:4](=[O:17])[NH:5][C:6]1[CH:11]=CC(OC)=[CH:8][C:7]=1[C:14](=[O:16])[CH3:15])C.[CH3:18][Mg]I.[Cl-].[NH4+].[CH2:23]([O:25][CH2:26][CH3:27])C>C1COCC1>[CH3:23][O:25][C:26]1[CH:27]=[CH:11][C:6]2[O:5][C:4](=[O:17])[NH:16][C:14]([CH3:15])([CH3:18])[C:7]=2[CH:8]=1

참가 물질

6

반응물 4

HCID 3283Diethyl EtherHCID 25517Ammonium ChlorideHCID 13365077Ethyl (2-acetyl-4-methoxyphenyl)carbamateHCID 178418373HCID 178418373, 화합물

생성물 1

HCID 21072857HCID 21072857, 화합물

시약·촉매·용매 1

HCID 8028Tetrahydrofuran용매

실험 절차

47.4 g (0.2 mol) of ethyl(2-acetyl-4-methoxyphenyl)carbamate, dissolved in 275 mL of THF, are added dropwise to a solution of 0.5 mol of methylmagnesium iodide in 200 mL of diethyl ether while cooling so that the temperature does not exceed 0° C. The mixture is stirred for 30 minutes at ambient temperature and then for 2 hours at reflux temperature. The reaction mixture is poured onto ice and combined with ammonium chloride. After the organic phase has been separated off, it is repeatedly extracted with ethyl acetate. The organic phases are combined, washed with water, dried with sodium sulfate, and evaporated down. The residue is dissolved in methanol and the solution is evaporated down and then combined with water. The precipitate formed is separated off, washed with water and recrystallized from toluene. Yield: 31.1 g (75%); m.p.=178° C.-180° C.

후처리

  1. temperaturewhile cooling so that the temperature
  2. customdoes not exceed 0° C
  3. temperaturefor 2 hours at reflux temperature
  4. additionThe reaction mixture is poured onto ice
  5. customAfter the organic phase has been separated off
  6. extractionit is repeatedly extracted with ethyl acetate
  7. washwashed with water
  8. dry with materialdried with sodium sulfate
  9. customevaporated down
  10. dissolutionThe residue is dissolved in methanol
  11. customthe solution is evaporated down
  12. customThe precipitate formed
  13. customis separated off
  14. washwashed with water
  15. customrecrystallized from toluene

출처 및 근거

ORD 기록
ord-63687336904b464f94c069d9ca60cefd
출처 데이터셋
uspto-grants-2008_05
특허 번호
US07375104B2

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