ACETOPHENONE DERIVATIVE AND ITS PRODUCTION

ACETOPHENONE DERIVATIVE AND ITS PRODUCTION

PURPOSE:To obtain a new acetophenone derivative useful as an intermediate for producing hydrazine-based derivatives having high insecticidal activity. CONSTITUTION:The compound is expressed by formula I [R is 1-2C alkyl or halogen; R is 4-6C tertiary alkyl or halogen; R to R are H or methyl), e.g. 6...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser: SUGIZAKI HIROYASU, YANAGI MIKIO, TOTANI TETSUYA
Format: Patent
Sprache:eng
Schlagworte:
APPARATUS THEREFOR
CHEMISTRY
GENERAL METHODS OF ORGANIC CHEMISTRY
HETEROCYCLIC COMPOUNDS
METALLURGY
ORGANIC CHEMISTRY
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Beschreibung
Zusammenfassung:PURPOSE:To obtain a new acetophenone derivative useful as an intermediate for producing hydrazine-based derivatives having high insecticidal activity. CONSTITUTION:The compound is expressed by formula I [R is 1-2C alkyl or halogen; R is 4-6C tertiary alkyl or halogen; R to R are H or methyl), e.g. 6-acetyl-8-t-butyl-5-methylchroman. This compound is obtained by reacting a compound expressed by formula II, e.g. 8-t-butyl-5-methylchroman with a compound expressed by the formula CH3COX (X is halogen) in the presence of a Lewis acid (preferably titanium tetrachloride) in an organic solvent, preferably at -10 to +25 deg.C temperature. An aromatic and an organic chlorine-based solvents and carbon disulfide are cited as the solvent.