DERIVATI PIRROLICI 2-AROILFORMIL SOSTITUITI E PROCEDIMENTI PER LA LORO PREPARAZIONE

NEW MATERIAL:2-Aroylformyl substituted pyrrole derivatives of formula I (R is H, alkyl, aryl; X is alkyl, alkyloxy, halogen). EXAMPLE:5-p-Methylbenzoyl-2-formyl-1-methylpyrrole. USE:Synthetic precursor of 1-methyl-5-aroylpyrrole-2-acetic acid, an anti-inflammatory agent. PREPARATION:The reaction bet...

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Bibliographic Details
Main Authors DAIEI TUNEMOTO, KIYOSI KONDO, AKIRA NEGISHI
Format Patent
LanguageItalian
Published 29.10.1986
Edition4
Subjects
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Summary:NEW MATERIAL:2-Aroylformyl substituted pyrrole derivatives of formula I (R is H, alkyl, aryl; X is alkyl, alkyloxy, halogen). EXAMPLE:5-p-Methylbenzoyl-2-formyl-1-methylpyrrole. USE:Synthetic precursor of 1-methyl-5-aroylpyrrole-2-acetic acid, an anti-inflammatory agent. PREPARATION:The reaction between a 2-aroylpyrrole derivative of formula I, e.g., 2-benzoylpyrrole, and an adduct of dimethylformamide with phosphorus oxychloride is conducted at -10-40 deg.C to give the compound of formula I.
Bibliography:Application Number: IT19800047713