p-Toluenesulfonic acid monohydrate → HCID 14441128, compound

HRID 892728Notes

Reaction equation

HRID 892728 reaction equation
[Cl:1][C:2]1[CH:7]=[CH:6][C:5]([C:8]2(O)[CH2:13][CH2:12][N:11]([CH2:14][CH2:15][NH:16][C:17]([N:19]3[CH2:23][CH2:22][CH2:21][C:20]3=[O:24])=[O:18])[CH2:10][CH2:9]2)=[CH:4][CH:3]=1.O.C1(C)C=CC(S(O)(=O)=O)=CC=1>C1(C)C=CC=CC=1>[Cl:1][C:2]1[CH:7]=[CH:6][C:5]([C:8]2[CH2:13][CH2:12][N:11]([CH2:14][CH2:15][NH:16][C:17]([N:19]3[CH2:23][CH2:22][CH2:21][C:20]3=[O:24])=[O:18])[CH2:10][CH:9]=2)=[CH:4][CH:3]=1

Participants

4

Reactant 2

HCID 521998p-Toluenesulfonic acid monohydrateHCID 14441123HCID 14441123, compound

Product 1

HCID 14441128HCID 14441128, compoundYield 98.3%

Reagents, catalysts & solvents 1

HCID 1140TolueneSolvent

Procedure

A solution of 1.68 g (4.59 mmol) of 1-[[2-[4-(4-chlorophenyl)-4-hydroxypiperidin-1-yl]ethyl]carbamoyl]-2-oxopyrrolidine (Ia-25) and 1.05 g (5.5 mmol) of p-toluenesulfonic acid monohydrate in 75 ml of toluene was refluxed for 25 hr. using a Dean-Stark trap containing 10 g of Molecular Sieves-4A. By proceeding as in Example 67, 1.57 g of the objective compound (Ia-29) was obtained.

Workup

  1. additioncontaining 10 g of Molecular Sieves-4A

Sources & evidence

ORD record
ord-5e1382673ddb4235ad5b6eeaefb9fb04
Source dataset
uspto-grants-1992_06
Patent number
US05120733

Reaction notes

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