3Acrylamido-3-methylbutyltrimethylammonium Chloride: A New Cationic Monomer

Abstract The monomer 3-acrylamido-3-methylbutyltrimethylammonium chloride was synthesized by two routes which differed in the first reaction of the synthetic sequence. Dimethylamino-methylation of isobutylene or dime thy lamination of isoprene gave intermediate amino-olefins which could be reacted with acrylonitrile in a Ritter reaction to yield 3-aerylamido-3-methylbutyldimethylamine. Subsequent quaternization with methyl chloride gave the subject monomer. The purity of the monomers from the two routes was found to differ greatly; however, extensively purified monomer was not necessary for high molecular weight polymer formation.