[DE] PATHOGENRESISTENZ IN ORGANISMEN<br/>[EN] PATHOGEN RESISTANCE IN ORGANISMS<br/>[FR] RESISTANCE AUX PATHOGENES DANS DES ORGANISMES
申请人:MPB COLOGNE GMBH
公开号:WO2002004020A2
公开(公告)日:2002-01-17
Die vorliegende Erfindung betrifft die Verwendung eines Polypeptids, das ein cyclisches sich von Oxazol ableitendes Keton bindet, zur Erzeugung von Pathogenresistenz in Organismen, insbesondere Pflanzen und Tieren.
Process for the manufacture of 2-phenyl-4,5-oxazoledione
申请人:Kureha Chemical Industry Co., Ltd.
公开号:US05646291A1
公开(公告)日:1997-07-08
A process for manufacturing derivatives of 2-phenyl-4,5-oxazoledione 4-phenylhyrazone is disclosed. The process comprises reacting a derivative of a benezenediazonium salt, a hippuric acid derivative, and acetic anhydride in the presence of a neutralizing agent to effect the cyclization reaction for the formation of the oxazolone ring and the succeeding diazo-coupling reaction. The process does not require the conventional separate, independent step for the preparation of a solution of a hippuric acid derivative and acetic anhydride, thus eliminating the quick heating and quenching procedures and further avoiding the loss of the hippuric acid derivative due to decomposition of the oxazolone derivative. There is thus obtained a high yield of the desired product in a short period of time.