Preparation of alkylated dodechydronaphto[2,1-b]furans

Alkylated dodecahydronaphtho[2,1-b]furans of the general formula I (I) where R1 and R2 are identical and each is hydrogen or methyl are prepared by reacting alkylated 2-hydroxydecahydronaphthalene-1-ethanol of the formula II (II) where R1 and R2 are as defined above, with a sulfonyl chloride in the...

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Bibliographic Details
Main Authors LAUTERBACH; GERALD, HICKMANN; ECKHARD, BECKER; RAINER, GRAMLICH; WALTER
Format Patent
LanguageEnglish
Published 17.04.1990
Subjects
ANIMAL AND VEGETABLE OILS, FATS, FATTY SUBSTANCES AND WAXES
APPARATUS THEREFOR
CANDLES
CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOIDCHEMISTRY
CHEMISTRY
DETERGENTS
ESSENTIAL OILS
FATTY ACIDS THEREFROM
GENERAL METHODS OF ORGANIC CHEMISTRY
HETEROCYCLIC COMPOUNDS
METALLURGY
ORGANIC CHEMISTRY
PERFORMING OPERATIONS
PERFUMES
PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
PRODUCING (PRESSING, EXTRACTION), REFINING AND PRESERVINGFATS, FATTY SUBSTANCES (e.g. LANOLIN), FATTY OILS AND WAXES,INCLUDING EXTRACTION FROM WASTE MATERIALS
THEIR RELEVANT APPARATUS
TRANSPORTING
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Summary:Alkylated dodecahydronaphtho[2,1-b]furans of the general formula I (I) where R1 and R2 are identical and each is hydrogen or methyl are prepared by reacting alkylated 2-hydroxydecahydronaphthalene-1-ethanol of the formula II (II) where R1 and R2 are as defined above, with a sulfonyl chloride in the presence of basic catalysts by performing the cyclization in the presence of concentrated aqueous alkali metal hydroxides and a phase transfer catalyst, preferably a tetra-substituted ammonium or phosphonium salt, the sulfonyl chloride used preferably comprising a sulfonyl chloride of the general formula III R3-SO2Cl where R3 is C1-C3-alkyl or phenyl which may be substituted in the para position by methyl, chlorine, bromine or nitro.
Bibliography:Application Number: US19880250077