HCID 19031074, compound → HCID 19031124, compound

HRID 1648562Notes

Reaction equation

HRID 1648562 reaction equation
C(OC([N:11]1[CH2:15][CH2:14][CH2:13][CH:12]1[C:16]([N:18]1[CH2:23][CH2:22][CH:21]([N:24]2[C:34]3[C:29](=[CH:30][CH:31]=[CH:32][CH:33]=3)[CH2:28][CH2:27][C:25]2=[O:26])[CH2:20][CH2:19]1)=[O:17])=O)C1C=CC=CC=1>C(O)C.[C].[Pd]>[NH:11]1[CH2:15][CH2:14][CH2:13][CH:12]1[C:16]([N:18]1[CH2:19][CH2:20][CH:21]([N:24]2[C:34]3[C:29](=[CH:30][CH:31]=[CH:32][CH:33]=3)[CH2:28][CH2:27][C:25]2=[O:26])[CH2:22][CH2:23]1)=[O:17]

Participants

4

Reactant 1

HCID 19031074HCID 19031074, compound

Product 1

HCID 19031124HCID 19031124, compoundYield 33.2%

Reagents, catalysts & solvents 2

HCID 178418390HCID 178418390, compoundCatalystHCID 702EthanolSolvent

Procedure

1-[1-(1-Benzyloxycarbonyl-2-pyrrolidinylcarbonyl)-4-piperidinyl]-3,4-dihydrocarbostyril (0.87 g) is dissolved in ethanol (20 ml) and thereto is added 5 % palladium-carbon (0.1 g). The mixture is stirred at room temperature under 1 atm. under hydrogen atmosphere. After the completion of the reaction, the catalyst is filtered off and the filtrate is concentrated. The resultant is purified by silica gel column chromatography (solvent; dichloromethane:methanol=8:1) to give 1-[1-(2-pyrrolidinylcarbonyl)-4-piperidinyl]-3,4-dihydrocarbostyril (205 mg).

Workup

  1. customAfter the completion of the reaction
  2. filtrationthe catalyst is filtered off
  3. concentrationthe filtrate is concentrated
  4. customThe resultant is purified by silica gel column chromatography (solvent; dichloromethane:methanol=8:1)

Sources & evidence

ORD record
ord-2cd68d26c0b4412aaa273a4a5acc66c9
Source dataset
uspto-grants-1995_07
Patent number
US05436254

Reaction notes

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