Basf Se Corporation

Basf Aktiengesellschaft

Wolfgang Reichert

Christopher Koradin

Michael Keil

Heiner Schelling

Bernd Ziegler

Friedhelm Teich

Martin Gall

Horst Kratzer

Herbert K&ouml;ster

Michael Rack

Bernd Wolf

Thomas Zierke

Volker Maywald

Sebastian Peer Smidt

Hartwig Schroeder

Manfred Ehresmann

Melanie Bonnekessel

Andreas Pletsch

Thomas Kaeding

Ralf Hoock

Yüksel Battal

The present invention relates to a method for preparing the pyripyropene compound of the formula (I) which method comprises the following steps: i) subjecting a pyripyropene compound of formula Pyripyropene A to an alkaline hydrolysis to yield a 1,7,11 -trideacetylpyripyropene A, ii) reacting 1,7,11-trideacetylpyripyropene A obtained in step i) with cyclopropane carbonyl chloride to yield a raw product containing the pyripyropene compound of formula (I); iii) subjecting the raw product of step ii) to crystallization to yield a crystalline pyripyropene compound of formula (I) and a mother liquor; and iv) recycling the mother liquor or a pyripyropene compound containing fraction thereof to the alkaline hydrolysis of step i). 

Method for preparing a pyripyropene compound

The present invention relates to a novel process for preparing acetanilides of the formula (I) by reacting a 2-halo-N-halomethylacetanilide of the formula (II) with an azole of the formula (III)H-A&#x2003;&#x2003;(III)wherein the substituents R, R, R, R, R, A, X and Xin the formulae (I), (II) and (III) have the meanings as indicated in the description.

Process for preparing acetanilides

A process for preparing arylcarboxamides of the formula (I) where with an arylamine (III) in a suitable nonaqueous solvent, wherein, in the absence of an auxiliary base,

Method for manufacturing aryl carboxamides

In a process for drying microporous, fluid-containing particles, the fluid-containing particles to be dried are fed as a moving bed countercurrently to a drying fluid, the interfacial tension of the fluid being reduced in comparison with the interfacial tension of the fluid at room temperature, at near-critical to supercritical pressure of the fluid, preferably to a value in the range from 0 to in particular from 0 to of the interfacial tension at room temperature. Furthermore, microporous, three-dimensionally networked particles are prepared by a process comprising preparation of microporous particles containing pore liquid, exchange of the pore liquid in the particles for a fluid and drying of the fluid-containing particles, the exchange and drying being carried out in the moving bed by the countercurrent method.

Method for drying and producing microporous particles

In a process for drying microporous, fluid-containing particles, the heat required for increasing the temperature is supplied by convection by reducing the interfacial tension of the fluid, preferably to 0 to 1/10, in particular to 0 to 1/20, of the interfacial tension of the fluid at room temperature, by appropriately increasing the temperature at from close to the critical pressure to supercritical pressure of the fluid. Furthermore, microporous, three-dimensionally networked particles are prepared by a process in which the drying process is used. In addition, an apparatus is used for carrying out the drying process, the apparatus comprising a pressure container having an inner container and pressure-withstanding outer container and suitable measuring and control apparatuses and pump apparatuses and heat exchangers, the inner container being provided for holding the particles to be dried and a gap being provided between the inner container and the outer container.

Method for drying and producing microporous particles and a drying device

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Frankenthal, Germany

Wolfgang Reichert