PROCESS FOR PRODUCING POLYALKYL-2-ALKOXY-79-HYDROXYCHROMAN DERIVATIVES

Process for preparing polyalkyl-2-alkoxy-7-hydroxychroman derivative of the general formula (V) :wherein R¹ denotes C₁ -C₄ primary alkyl, R² denotes hydrogen or C₁ -C₄ primary alkyl and R³ denotes C₁-C₄ alkyl, by reacting resorcin with   an aliphatic ketone acetal of the general formula (III):wherei...

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Main Authors FUKUOKA,DAISUKE,JP, ISHITOKU,TAKESHI,JP, TAN,HIROAKI,JP, MUKAIYAMA,TERUAKI,JP, TAKAHASHI,KATSUYA,JP, ISHIGURO,MASAHARU,JP, IMUTA,JUNICHI,JP, KIHARA,NORIAKI,JP, TASHIRO,TAKASHI,JP
Format Patent
LanguageEnglish
Published 28.12.1993
Edition5
Subjects
CHEMISTRY
HETEROCYCLIC COMPOUNDS
METALLURGY
ORGANIC CHEMISTRY
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Summary:Process for preparing polyalkyl-2-alkoxy-7-hydroxychroman derivative of the general formula (V) :wherein R¹ denotes C₁ -C₄ primary alkyl, R² denotes hydrogen or C₁ -C₄ primary alkyl and R³ denotes C₁-C₄ alkyl, by reacting resorcin with   an aliphatic ketone acetal of the general formula (III):wherein R¹ , R² and R³ are as defined above, in the presence of an acid catalyst.
Bibliography:Application Number: HU19900004073