Abstract
The asymmetric polymerization of eleven N,N-disubstituted acrylamides was studied with chiral anionic initiators consisting of (−)-sparteine or (2S,3S)-(+)-1,4-bis(dimethyl-amino)-2,3-dimethoxybutane and organolithium compounds. Nine of poly(N,N-disubstituted acrylamide)s obtained were optically active ([α]D25+81.7°∼−101°). The chirality of the polymers is ascribed to one-handed helical conformation. Poly(N,N-diphenylacrylamide) obtained with (−)-sparteine-fluorenyllithium complex in toluene at −97°C showed the largest negative rotation ([α]D25−101°).
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