Potassium Carbonate → 3-(R, S)-(1-cyano-1,1-diphenylmethyl)-1-(3,4-methylenedioxybenzyl)piperidine

HRID 21394

反応式

HRID 21394 の反応式
[C:1]([C:3]([CH: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]1[O:32][C:31]2[CH:30]=[CH:29][C:26]([CH2:27]Cl)=[CH:25][C:24]=2[O:23]1.C(=O)([O-])[O-].[K+].[K+]>C(#N)C>[C:1]([C:3]([CH:16]1[CH2:21][CH2:20][CH2:19][N:18]([CH2:27][C:26]2[CH:29]=[CH:30][C:31]3[O:32][CH2:22][O:23][C:24]=3[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]

参加物

5

反応物 3

HCID 11430Potassium CarbonateHCID 887131,3-Benzodioxole, 5-(chloromethyl)-HCID 136337463-(R,S)-(1-cyano-1,1-diphenylmethyl)piperidine

生成物 1

HCID 212240903-(R, S)-(1-cyano-1,1-diphenylmethyl)-1-(3,4-methylenedioxybenzyl)piperidine

試薬・触媒・溶媒 1

HCID 6342Acetonitrile溶媒

実験手順

A mixture containing 3-(R,S)-(1-cyano-1,1-diphenylmethyl)piperidine (0.27 g), 3,4-methylenedioxybenzyl chloride (0.18 g), anhydrous potassium carbonate (0.3 g) and acetonitrile (10 ml) was heated under reflux for 16 hours. The mixture was partitioned between dichloromethane (30 ml) and 10% aqueous sodium carbonate (30 ml), the layers separated, and the aqueous layer extracted with dichloromethane (2×30 ml). The combined dichloromethane extracts were dried (MgSO4) and concentrated in vacuo to give a gum which was purified by column chromatography on silica eluting with dichloromethane containing methanol (0% up to 2%). The product-containing fractions were combined and concentrated in vacuo to give the title compound as a colourless solid, yield 0.2 g, m.p. 127°-130° C.

後処理

  1. temperaturewas heated
  2. temperatureunder reflux for 16 hours
  3. customThe mixture was partitioned between dichloromethane (30 ml) and 10% aqueous sodium carbonate (30 ml)
  4. customthe layers separated
  5. extractionthe aqueous layer extracted with dichloromethane (2×30 ml)
  6. dry with materialThe combined dichloromethane extracts were dried (MgSO4)
  7. concentrationconcentrated in vacuo
  8. customto give a gum which
  9. customwas purified by column chromatography on silica eluting with dichloromethane
  10. additioncontaining methanol (0% up to 2%)
  11. concentrationconcentrated in vacuo

出典と根拠

ORDレコード
ord-f4ebb4a7445c4ab394c698709b23831b
出典データセット
uspto-grants-1995_06
特許番号
US05422358

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