Abstract: A continuous process for generation of phosgene from CO and Cl2 and consumption of the phosgene thus generated in a liquid-phase reaction so as to form organic products P. The process is implemented in two successive reactors R1 and R2, the first reactor R1 being a reactor for catalytic synthesis of phosgene from CO and Cl2 gas, and the second reactor R2 being a piston reactor, the second reactor R2 being equipped with a mechanical axial agitation device.

Abstract: Organic synthesis, i.e., the synthesis of carboxylic acids by direct carbonylation of alcohols in a continuous process, and more particularly, the synthesis of phenylalkylic acids, which are synthesis intermediates useful in pharmaceutical chemistry, by direct carbonylation of phenyl alkyl alcohols.

Abstract: The invention relates to a continuous method for the catalytic hydrogenation of an aromatic compound into a cycloaliphatic compound, wherein said method is carried out in a piston reactor provided with a mechanical axially agitating means and comprises continuously feeding a liquid phase comprising said aromatic compound and a catalyst dispersed to the liquid phase, subjecting said liquid phase, at a temperature of between 100° C. and 300° C. and while being mechanical axially agitated, to the effects of a hydrogen pressure of between 10 and 250 bars in the presence of said catalyst dispersed in the liquid phase for a residence time of between 1 second and 10 minutes, and removing the liquid phase from the reactor.