Autoxidation of Tetralin Catalyzed by Cobalt-Pyridine Complexes in Polymer Latexes.

摘要

Cobalt (II) has been bound quantitatively to copolymer latexes prepared from acrylic acid, styrene, and divinylbenzene; methacrylic acid, styrene, and divinylbenzene; sodium 4-styrenesulfonate (NaSS), styrene and divinylbenzene; and NnaS, 4-vinylpyridine, styrene, and divinylbenzene. With added pyridine, the cobalt acrylate and methacrylate latexes catalyzed the autoxidation of 1,2,3,4,-tetrahydronaphthalene, (tetralin) in aqueous suspension up to 3.3 times faster than Co(II) and pyridine in aqueous solution at 50C. The cobalt NaSS/4-vinylpyridine latexes were only slightly more active than Co(II) and pyridine in aqueous solution. The autoxidation proceeds by a free radical mechanism. Keywords: Polymer chemistry; Reprints. (KT)