AN IMPROVED ONE POT, ONE STEP PROCESS FOR THE HALOGENATION OF AROMATICS USING SOLID ACID CATALYSTS
申请人:COUNCIL OF SCIENTIFIC AND INDUSTRIAL RESEARCH
公开号:US20190100487A1
公开(公告)日:2019-04-04
The present invention disclosed an improved one pot, one step process for halogenation of compound of formula (II) to afford corresponding halogenated compound of formula (I) having improved yield and increased selectivity under very mild conditions.
The present invention provides compounds and compositions thereof which are useful as inhibitors of plasma kallikrein and which exhibit desirable characteristics for the same.
N-(2'-alkoxy-ethyl)-N-chloroacetyl-2,3,6-trimethyl-anilines wherein the alkoxy residue is methoxy, ethoxy or isopropoxy are effective weedkillers in plant crops, such as soya and cotton. They may also be used for retarding plant growth.
Aromatic amines (anilines) are obtained directly or via the corresponding cycloaliphatic amines by an aminating/hydrogenating reaction of phenols with ammonia and hydrogen over a supported palladium catalyst which also contains elements from group 1b, 2b or 7b of the periodic table as well as iron, cobalt or nickel, as such or in the form of their compounds, and, preferably, an inorganic base, said catalysts also having dehydrogenating properties.