Bis(1,2,2,6,6-penta-methyl-piperidin-4-yl) 2-butyl-2-(3,5-di-tert-butyl-4-hydroxy-benz-yl)malonate (Tinuvin 144).

ABSTRACT: The title compound, C(42)H(72)N(2)O(5), a hindered amine light stabiliser (HALS) with the trade name Tinuvin 144 was prepared from bis-(1,2,2,6,6-penta-methyl-piperidin-4-yl) 2-butyl-malonate and 2,6-di-tert-butyl-4-[(dimethyl-amino)meth-yl]phenol using lithium amide as a catalyst. In the mol-ecule, both piperidine rings adopt chair conformations. In the crystal, inversion dimers linked by pairs of O-H⋯O hydrogen bonds occur.

SUBMITTER: Zeng T 

PROVIDER: S-EPMC2970408 | biostudies-literature | 2009 Sep

REPOSITORIES: biostudies-literature