PROCESS FOR PREPARING ISOCHROMANE DERIVATIVES

The proposed method is to be used for the prepn. of a family of isochroman derivs., their stereo-isomers and mixts. A typical cpd. is indicated by the diag. R is fixed or replaceable phenyl gp. 1-3 identical or differing replacements may be used such as halogen, hydroxyl, carboxyl, 1-4C alkyl, 1-4C...

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Main Authors ZOLYOMI,GABOR,HU, LANG,TIVADARNE,HU, LANG,TIBOR,HU, BOTKA,PETER,HU, KOEROESI,JENOE,HU, HAMORI,TAMAS,HU
Format Patent
LanguageEnglish
Published 28.02.1986
Edition4
Subjects
CHEMISTRY
HETEROCYCLIC COMPOUNDS
METALLURGY
ORGANIC CHEMISTRY
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Summary:The proposed method is to be used for the prepn. of a family of isochroman derivs., their stereo-isomers and mixts. A typical cpd. is indicated by the diag. R is fixed or replaceable phenyl gp. 1-3 identical or differing replacements may be used such as halogen, hydroxyl, carboxyl, 1-4C alkyl, 1-4C alkoxy, nitro- or methylene-dioxy. R is also a fixed or replaceable naphthyl, where the replacement is a hydroxy gp. R1 is hydrogen or a 1-4C alkyl. R2 and R3 is a 1-4C alkyl, or R2 and R3 together represent methylene, but only when R is not 3,4-dimethoxyphenyl. The above cpds. are used as intermediates for the prodn. of medically valuable 5H-2,3-benzodiazepine-derivs.
Bibliography:Application Number: HU19840002812