A PROCESS FOR THE PREPARATION OF [1,4,5]-OXADIAZEPANE DERIVATIVES

The invention provides a process for the preparation of a [1,4,5]-oxadiazepane derivative, which comprises reacting a 4,5-diacyl-[1,4,5]-oxadiazepane with a base in a polar solvent and at an elevated temperature; wherein the 4,5-diacyl-[1,4,5]-oxadiazepane is of formula (l): (see formula I) and wher...

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Bibliographic Details
Main Authors JAU, BEAT, FABER, DOMINIK
Format Patent
LanguageEnglish
French
Published 02.07.2013
Subjects
CHEMISTRY
HETEROCYCLIC COMPOUNDS
METALLURGY
ORGANIC CHEMISTRY
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Summary:The invention provides a process for the preparation of a [1,4,5]-oxadiazepane derivative, which comprises reacting a 4,5-diacyl-[1,4,5]-oxadiazepane with a base in a polar solvent and at an elevated temperature; wherein the 4,5-diacyl-[1,4,5]-oxadiazepane is of formula (l): (see formula I) and wherein, in the process, the 4,5-diacyl-[1,4,5]-oxadiazepane of formula (l) is converted into the corresponding [1,4,5]-oxadiazepane using the base. The invention further provides a process for the preparation of a herbicide of the tetrahydropyrazolodione type, comprising: (i) performing the process for preparation of the [1,4,5]-oxadiazepane derivative, and (ii) using the prepared [1,4,5]-oxadiazepane derivative as an intermediate in the preparation of the herbicide of the tetrahydropyrazolodione type. L'invention concerne un procédé pour la préparation de dérivés de [1,4,5]-oxadiazépine par réaction de 4,5-diacyl-[1,4,5]-oxadiazépines avec une base.
Bibliography:Application Number: CA20052579742