Process for the production of polyalkylpiperidylamines

Details Process for the production of polyalkylpiperidylamines Process for the production of polyalkylpiperidylamines

C - Chemistry, Metallurgy

07

D

260/278.1, 260/2

C07D 401/12 (2006.01) C07D 211/58 (2006.01)

Patent

CA 1217771

ABSTRACT OF THE DISCLOSURE A process for producing polyalkylpiperidylamines of the formula (I): Image (I) wherein R1 is hydrogen or a C1-C12 alkylradical; R2 and R3 are each C1-C5 alkylradicals or R2 and R3, taken together, are -(CH)-a or -CH2-NR1-C(R5,R6)-CH2-; R4 is a C2-C18 alkylene radical, which is unsubstituted or substituted by C1-C3 alkyl; a C5-C12 cycloalkylene radical, which is unsubstituted or is methyl- substituted; a cycloalkylene radical of the formula Image where the cyclohexyl ring are unsubstituted or are methyl-substituted; or groups of the formula -(CH2)k-X- [(CH2)m-X]-n(CH2)p-, where X is -O-, -NH-, -NR5 and R5 and R6 are each a C1-C5 alkyl radical and a is 4 or 5, k is 2 or 3, n is 0-3 and p is 2 or 3; which process involves reductively alkylating an alkylated 4- aminopiperidine of the formula (II): Image with a difunctional alcohol of the formula HO-R4-OH, wherein R1 and R4 have the above definitions.

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