Continuous process for the preparation of 4-amino-2,2,6,6-tetram

Details Continuous process for the preparation of 4-amino-2,2,6,6-tetram Continuous process for the preparation of 4-amino-2,2,6,6-tetram

1996-12-02

1998-06-30

Rotman, Alan L.

Organic compounds -- part of the class 532-570 series

Organic compounds

Heterocyclic carbon compounds containing a hetero ring...

502337, C07D21156

Patent

active

057736227

ABSTRACT:
A process for the continuous preparation of 4-amino-2,2,6,6-tetramethylpiperidine (TAD), comprising: passing triacetoneamine, ammonia and hydrogen over a catalyst of at least two layers in a reactor, wherein at least one catalyst layer comprises at least one element of the 4th, 5th, or 6th row of the 8th transition group of the Periodic Table or combinations of these metal elements on a suitable support, where the catalyst content with respect to each individual catalytically active element changes independently from the reactor inlet to the reactor outlet.

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