PROCESS FOR PREPARING BENZOYL OXYACETANILIDES BY MICROWAVES

The invention relates to a process for preparing 2-benzoyl oxyacetanilides with anesthetic properties. According to the invention, the process consists in condensing 2-chloroacetanilides with sodium benzoate in a molar ratio of 1:1 in dimethyl sulphoxide while stirring, in very high energy microwave...

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1. Verfasser: NICOLESCU TEODOR OCTAVIAN
Format: Patent
Sprache:eng ; rum
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Zusammenfassung:The invention relates to a process for preparing 2-benzoyl oxyacetanilides with anesthetic properties. According to the invention, the process consists in condensing 2-chloroacetanilides with sodium benzoate in a molar ratio of 1:1 in dimethyl sulphoxide while stirring, in very high energy microwaves, for 7 min, with a pre-stirring period of time of 30 s, at a temperature of 130°C, there resulting a product with an efficiency of 77...94% after usually processing the reaction mixture. Invenţia se referă la un procedeu de obţinere a 2-benzoiloxiacetanilidelor cu proprietăţi anestezice. Procedeul conform invenţiei constă din reacţia de condensare, în microunde de energie foarte înaltă, a 2-cloracetanilidelor cu benzoat de sodiu în raport molar 1 : 1, în dimetilsulfoxid sub agitare, timp de 7 min, cu o perioadă de preagitare de 30 s, la o temperatură de 130°C, după prelucrarea uzuală a amestecului de reacţie rezultând produsul cu un randament de 77...94%.