Sterically hindered amines are very important in a variety of applications. They are particularly useful as proton scavengers in~ ynthesis. l-~ Their metal salts have been invaluable reagents in selective alkylation reactions of carbonyl compounds. 6-ll Industrially, sterically hindered amines are precursors to persistent nitroxyl radicals, important as polymer photo~ tabilizers.~~-~ 5 Hindered amines are also important agents for removal ...
