摘要:
The present invention relates to a process for the preparation of 2-(trihalomethyl) benzamide from a 2-(trihalomethyl) benzoyl chloride in the presence of isopropanol or cold water.
摘要:
The present invention provides a process for the preparation of 2,6-dihalo-para-trifluoromethylanilines as intermediates for pyrazoles comprising the halogenation of para-trifluoromethylaniniline with dihalogen.
摘要:
The main object of present invention is to provide an economical and industrially applicable process for preparation of sultones of Formula (I). wherein n is 1-3 Sultones such as 1,3-propanesultone and 1,4-butanesultone are widely used as electroplating intermediates, pharmaceutical intermediates, photosensitive material, lithium batteries, and other household chemicals.
摘要:
The present invention relates to a process for preparing 2,2-difluoro-1,3-benzodioxole. The process comprises a step of reacting 1,3-benzodioxole with chlorine in benzotrifluoride in the present of a radical initiator. The present invention also relates to the process for preparing 2,2-dichloro-1,3-benzodioxole which is used as an intermediate in preparation of 2,2-difluoro-1,3-benzodioxole.
摘要:
The present invention provides a process for the preparation of N-alkylated fluorine-containing pyrazolecarboxylic acid derivatives of Formula I. The present invention further provides a pyrazole compound of formula IIIa. (Formula I and IIIa should be inserted here.)