The amino group on the amino compound can be protected by forming an amide or amine, which is less reactive than a free amino group. One common protecting group for amines is the Boc (tert-butoxycarbonyl) group, which can be added to the amine prior to the Michael addition.
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3-(2-chlorophenylamino)-N,N-dimethylpropionamide
N-4,4'-dimethoxytritylazetidine
(S)-2-MercaptoMethyl-pyrrolidine-1-carboxylic acid benzyl ester
3-chloro-2-methylpropionic acid
(4R,5R)-4-acetoxy-7-chloro-5-methoxymethoxy-1-(p-toluenesulfonyl)-2,3,4,5-tetrahydro-1H-1-benzazepine
2-(4-hydroxy-benzylidene)amino-benzo[de]isoquinolin-1,3-dione
(4S,5S)-5-<(1R)-1-benzoyloxy-2-propen-1-yl>-4-hydroxymethyloxazolidin-2-one
