p-Toluenesulfonic acid monohydrate → Repaglinide

HRID 1034031Notes

Reaction equation

HRID 1034031 reaction equation
[CH2:1]([O:3][C:4]1[CH:16]=[C:15]([CH2:17][C:18]([NH:20][C@H:21]([C:26]2[CH:31]=[CH:30][CH:29]=[CH:28][C:27]=2[N:32]2[CH2:37][CH2:36][CH2:35][CH2:34][CH2:33]2)[CH2:22][CH:23]([CH3:25])[CH3:24])=[O:19])[CH:14]=[CH:13][C:5]=1[C:6]([O:8]C(C)(C)C)=[O:7])[CH3:2].O.C1(C)C=CC(S(O)(=O)=O)=CC=1>C1C=CC=CC=1>[CH2:1]([O:3][C:4]1[CH:16]=[C:15]([CH2:17][C:18]([NH:20][C@H:21]([C:26]2[CH:31]=[CH:30][CH:29]=[CH:28][C:27]=2[N:32]2[CH2:33][CH2:34][CH2:35][CH2:36][CH2:37]2)[CH2:22][CH:23]([CH3:25])[CH3:24])=[O:19])[CH:14]=[CH:13][C:5]=1[C:6]([OH:8])=[O:7])[CH3:2]

Participants

4

Reactant 2

HCID 521998p-Toluenesulfonic acid monohydrateHCID 53472587tert.butyl (S)-2-ethoxy-4-[N-(1-(2-piperidino-phenyl)-3-methyl-1-butyl)-aminocarbonylmethyl]-benzoate

Product 1

HCID 65981Repaglinide

Reagents, catalysts & solvents 1

HCID 241BenzeneSolvent

Procedure

102 mg (0.20 mMol) of tert.butyl (S)-2-ethoxy-4-[N-(1-(2-piperidino-phenyl)-3-methyl-1-butyl)-aminocarbonylmethyl]-benzoate (melting point: 122°-123° C.; [α]D20 =+8.7°; c=1 in methanol) are refluxed in 5 ml of benzene together with a few crystals of p-toluenesulphonic acid hydrate, for half a day. The desired product is then obtained, according to thin layer chromatography, according to the RF value and mass spectrum.

Sources & evidence

ORD record
ord-1cda1eb1e1ec4b2498fe73a1bb428649
Source dataset
uspto-grants-1994_05
Patent number
US05312924

Reaction notes

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