摘要:
Die vorliegende Erfindung betrifft neue 2-Brom-2,2-dichlorethyl-aromaten der Formel (V), in welcher Ar die oben genannte Bedeutung hat, sowie Verfahren zu ihrer Herstellung.
摘要:
The present invention relates to the single-step process for the synthesis of aryl olefin compounds of Formula (1) by reacting aryl aldehydes with alkyl aldehydes in presence of malononitrile and acid or base or salt, optionally in presence of solvent.
摘要:
A process for the manufacture of a haloaryl compound which comprises contacting a mixture of dihalodiarylsulfone isomers [mixture (M)] with sulfuric acid to provide a mixture of haloarylsulfonic acid isomers [mixture (M1)] and reacting mixture (M1) in the presence of water. The process is independent on the manufacturing process of mixture (M) and is advantageous in that the obtained haloaryl compound can be recycled to the first step of a dihalodiarylsulfone manufacturing process.
摘要:
The invention herein relates to a process for the selective preparation of Para dichlorobenzene, comprising reacting benzene or monochlorobenzene with chlorine in presence of Lewis acid catalyst, at least one inorganic modifier and at least one organic modifier in a reactor. In particular, a process provided in which the para dichlorobenzene is obtained with a selectivity >72% by reacting benzene and chlorine under normal pressure in presence of a new catalyst technology in solution phase with ortho dichlorobenzene
摘要:
The invention relates to a process for the separation of a component from a gaseous medium by crystallization comprising injecting a gaseous medium containing the component to be separated into a cooling liquid in a crystallizer to form free traveling vapor bubbles which upon cooling induce supersaturation of the crystallizing component with subsequent crystallization of the component at the phase interface of the free traveling vapor bubbles in the cooling liquid. The invention also relates to a device useful for carrying out the process.
摘要:
A method of converting at least one aromatic compound selected among (a) an aromatic compound having three or more substituents, (b) an aromatic compound having two substituents at least one of which is a halogen or has two or more carbon atoms, and (c) a substituted naphthalene or anthracene derivative, characterized by contacting the aromatic compound with a catalyst comprising a zeolite characterized in that (1) the main channels thereof have a minimum inlet diameter larger than 0.65 nm or a maximum inlet diameter larger than 0.70 nm and (2) the main channels each does not intersect a void larger than a ten-membered oxygen ring. By the method, an aromatic compound having a relatively large molecular size can be efficiently converted.
摘要:
Derivatives of 1-phenyl-tetralin were found to be pesticidally active having high efficiency against several Basidomyceta, Ascomycota and Heterokontophyta fungi as well as protobacteria of the genus Pseudomonas.