G. Butler, A. Zampini
Mar 1, 1977
Citations
0
Influential Citations
12
Citations
Journal
Journal of Macromolecular Science, Part A
Abstract
Abstract N-Carbethoxymaleimide (I), a convenient intermediate to maleoylamino acids in aqueous solution, also undergoes facile reaction with amines in ether. Thermolyses of the resulting imide-amides at 170-180°C gave N-substituted maleimides. N,N-Dimethyl-l,3-propanediamine reacted with I to give XI directly. Copolymers prepared and studied were those of divinyl ether with N-carbethoxymaleimide, maleoylglycine, maleoyl-DL-alanine, maleoyl-DL-phenylalanine, maleoyl-L-phenylalanine, maleoyl-DL-methionine and maleoyl-DL-leucine. These copolymers were characterized by elemental analyses to establish the comonomer ratios, by viscosity measurements, and in certain instances by determination of molecular weight by membrane osmometry after esterifica-tion with diazomethane.