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EP0185227A2 Expired / Lapsed EP ⏱️ 0.0 years remaining

Process for the preparation of phenyl-N-(2-biphenylylsulfonyl) carbamate

Assignee: Bayer CropScience KK
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Filing: 1985-11-26
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Granted: —
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Expires: 2005-11-26
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Abstract

Abstract Translated from German Die vorliegende Erfindung betrifft ein Verfahren zur Herstellung von Phenyl-N-(2-biphenylysulfonyl) carbamat der allgemeinen Formel durch Reaktion von 2-Phenylbenzolsulfonamid der allgemeinen Formel mit Diphenylcarbonat der allgemeinen Formel das dadurch gekennzeichnet ist, daß die Reaktion in Gegenwart eines Alkalimetallhydroxids und eines aprotischen Lösungsmittels bei Temperaturen zwischen etwa 20°C und etwa 60°C durchgefuhrt wird. The present invention relates to a process for the preparation of phenyl-N- (2-biphenylysulfonyl) carbamate of the general formula by reaction of 2-phenylbenzenesulfonamide of the general formula with diphenyl carbonate of the general formula which is characterized in that the reaction is carried out in the presence of an alkali metal hydroxide and an aprotic solvent at temperatures between about 20 ° C and about 60 ° C. Die Verbindung (I) kann als Zwischenprodukt zur Herstellung von bekannten herbiziden Wirkstoffen verwendet werden. The compound (I) can be used as an intermediate for the preparation of known herbicidal active compounds.

Inventors

  • 👤 Junichi Saito
  • 👤 Tatsuo Tamura

Bibliographic Details

Application Number —
Jurisdiction EP
Data Source google_patents
Last Synchronized 2026-11-09 03:33
CPC Classifications
C; C07; C07C; C07C311/00; C07C311/50; C07C311/52; C07C311/53

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