Patent ID: 7390904

Claim:
A process for preparing sterically hindered N-hydrocarbyloxyamines of formula Ia which process comprises reacting a sterically hindered nitroxyl compound of formula IIa with a hydrocarbon containing no activated hydrogen atoms in the presence of hydrogen peroxide, a catalytic amount of a peroxide decomposing transition metal, metal salt, metal oxide, or metal-ligand complex, and a relatively inert cosolvent selected from methanol and acetonitrile, at a suitable temperature for a suitable time which brings about the desired conversion, wherein G 1 through G 4 are each C 1 -C 4 alkyl, or G 1 and G 2 together are pentamethylene, or G 1 -G 2 together and G 3 -G 4 together are each pentamethylene, T is alkylene of 3 carbon atoms substituted by X, X is hydrogen, hydroxyl, oxo, —NH—CO—R2, —O—CO—R2, or —NH—CO—NH—R2, where R2 is straight or branched alkyl of 1 to 18 carbon atoms, and E is straight or branched C 5 -C 18 alkyl, C 5 -C 12 cycloalkyl, or C 7 -C 12 bicycloalkyl or is C 10 -C 20 aralkyl or aralkyl substituted by alkyl or aryl, with the proviso that in the hydrocarbon, no carbon atom attached to an aromatic ring is substituted by hydrogen.