An Efficient Silane-Promoted Nickel-Catalyzed Amination of Aryl and Heteroaryl Chlorides
摘要:
A new silane-promoted nickel-catalyzed amination of aryl chlorides with 0.5 mol % of Ni(acac)2, 1 mol% of 3,5,6,8-tetrabromo-1, 10-phenanthroline, and polymethythydrosiloxane was developed. A broad range of aryl and heteroaryl chlorides can be coupled with secondary amines and anilines to give the desired (het)arylamines in good to excellent yields. The reaction is sensitive to the nature and amount of the silane promoter.
There are disclosed compounds of the formula ##STR1## wherein the various substituents are defined hereinbelow, and, by virtue of their ability to inhibit interleukin 1, their use as antiinflammatory agents and in treatment of disease states involving enzymatic tissue destruction.