Chinoin Gyogyszer Es Vegyeszeti Termekek Gyara Rt.

Maria Sziladi

Tamas U Kallay

Tibor Montay

Eva Somfai

Gyorgy Lugosi

Laszlo Ledniczky

Maria Bakonyi

Gyorgy Lanyi

Zsuzsanna Nad

Maria Hima Nee Toth

Lajos Imrei

Tibor Montai

Tamas Kallai

Gyorgy Hoffmann

The present invention relates to a process for the preparation of L-isomer of propargyl-ammonium-chloride derivatives of the formula (I) ##STR1## by decomposing D-tartarte of L-isomer of the amine of the general ##STR2## wherein y is hydrogen or fluoro and by reacting the obtained L-issomer amine of the formula (II) in the presence of a base with a halide of the formula (V), X--CH.sub.2 --C.ident.CCH wherein X is halogen and by reacting the so obtained L-isomer of the Formula (III) ##STR3## with hydrogen-chloride in an organic solvent, wherein x is a halogen atom,

Process for the preparation of propargyl ammonium-chloride

Process for the preparation of substituted isoflavone derivative

A new process is disclosed for preparing a compound of the formula (I) ##STR1## wherein R is C.sub.1 to C.sub.5 alkyl; which comprises reducing a compound of the formula (II) ##STR2## or salt thereof wherein A is --SO.sub.2 X, --SOH, --SOA.sup.1, or --SA.sup.1 group,

Process for the preparation of benzimidazole-thiol

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Budapest, Hungary

Maria Sziladi