Oxaprozin → Butanedioic acid;bis(2-hydroxy-1,2-diphenylethanone)

HRID 1870491

Reaction equation

C1(C2N=[C:9]([CH2:18][CH2:19][C:20]([OH:22])=[O:21])[O:10]C=2C2C=CC=CC=2)C=CC=CC=1.[C:23]1([C:29]([CH:31]([C:33]2[CH:38]=[CH:37][CH:36]=[CH:35][CH:34]=2)[OH:32])=[O:30])[CH:28]=[CH:27][CH:26]=[CH:25][CH:24]=1.C1(=O)OC(=O)CC1>>[C:20]([OH:22])(=[O:21])[CH2:19][CH2:18][C:9]([OH:30])=[O:10].[C:23]1([C:29]([CH:31]([C:33]2[CH:38]=[CH:37][CH:36]=[CH:35][CH:34]=2)[OH:32])=[O:30])[CH:24]=[CH:25][CH:26]=[CH:27][CH:28]=1.[C:23]1([C:29]([CH:31]([C:33]2[CH:38]=[CH:37][CH:36]=[CH:35][CH:34]=2)[OH:32])=[O:30])[CH:24]=[CH:25][CH:26]=[CH:27][CH:28]=1

Participants

Reactant 3

HCID 4614Oxaprozin

HCID 7922Succinic anhydride

HCID 8400Benzoin

Product 1

HCID 131711721Butanedioic acid;bis(2-hydroxy-1,2-diphenylethanone)

Procedure

A process for the preparation of 4,5-diphenyloxazole-2-propanoic acid of formula I ##STR2## by esterification of benzoin with succinic anhydride to give benzoin hemisuccinate, and cyclization to (I) by direct addition of ammonium acetate or urea to the mixture containing the hemisuccinate,

Sources & evidence

ORD record: ord-cf112545ea7f4486bef9bbf657337f54
Source dataset: uspto-grants-2000_08
DOI: 10.6084/m9.figshare.5104873.v1
Patent number: US06096896

Linked notes

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