Phenethyl bromide → 3-(R)-(+)-(1-cyano-1,1-diphenylmethyl)-1-phenethylpiperidine

HRID 21386

반응식

HRID 21386 반응식
[C:1]([C:3]([C@H:16]1[CH2:21][CH2:20][CH2:19][NH:18][CH2:17]1)([C:10]1[CH:15]=[CH:14][CH:13]=[CH:12][CH:11]=1)[C:4]1[CH:9]=[CH:8][CH:7]=[CH:6][CH:5]=1)#[N:2].[CH2:22](Br)[CH2:23][C:24]1[CH:29]=[CH:28][CH:27]=[CH:26][CH:25]=1.C(=O)([O-])[O-].[K+].[K+]>C(#N)C>[C:1]([C:3]([C@H:16]1[CH2:21][CH2:20][CH2:19][N:18]([CH2:22][CH2:23][C:24]2[CH:29]=[CH:28][CH:27]=[CH:26][CH:25]=2)[CH2:17]1)([C:10]1[CH:11]=[CH:12][CH:13]=[CH:14][CH:15]=1)[C:4]1[CH:9]=[CH:8][CH:7]=[CH:6][CH:5]=1)#[N:2]

참가 물질

5

반응물 3

HCID 7666Phenethyl bromideHCID 11430Potassium CarbonateHCID 228537583-(R)-(1-cyano-1,1-diphenylmethyl)-piperidine

생성물 1

HCID 228537563-(R)-(+)-(1-cyano-1,1-diphenylmethyl)-1-phenethylpiperidine

시약·촉매·용매 1

HCID 6342Acetonitrile용매

실험 절차

A mixture containing 3-(R)-(+)-(1-cyano-1,1-diphenylmethyl)piperidine (1 g), phenethyl bromide (0.-67 g), anhydrous potassium carbonate (1.5 g) and acetonitrile (25 ml) was heated under reflux for 4 hours. The mixture was partitioned between dichloromethane (50 ml) and 10% aqueous potassium carbonate (30 ml), the layers separated, and the aqueous layer extracted with dichloromethane (3×30 ml)--. The combined dichloromethane extracts were dried (MgSO4) and concentrated in vacuo to give an oil which was purified by column chromatography on silica eluting with hexane containing dichloromethane (30% up to 70%) then dichloromethane containing methanol (0% up to 5%). The product-containing fractions were combined and concentrated in vacuo to give an oil which was crystallised from acetonitrile to give the title compound as colourless rhombs, yield 0.72 g, m.p. 134°-138° C., [α]D25 +13.3° (C 1.0, CH2Cl2).

후처리

  1. temperaturewas heated
  2. temperatureunder reflux for 4 hours
  3. customThe mixture was partitioned between dichloromethane (50 ml) and 10% aqueous potassium carbonate (30 ml)
  4. customthe layers separated
  5. extractionthe aqueous layer extracted with dichloromethane (3×30 ml)--. The combined dichloromethane extracts
  6. dry with materialwere dried (MgSO4)
  7. concentrationconcentrated in vacuo
  8. customto give an oil which
  9. customwas purified by column chromatography on silica eluting with hexane
  10. additioncontaining dichloromethane (30% up to 70%)
  11. additiondichloromethane containing methanol (0% up to 5%)
  12. concentrationconcentrated in vacuo
  13. customto give an oil which
  14. customwas crystallised from acetonitrile

출처 및 근거

ORD 기록
ord-19fb6cb68a014b86af7f9d7ebbf543ed
출처 데이터셋
uspto-grants-1995_06
특허 번호
US05422358

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