¹³C and ¹⁵N Solid-State NMR of Partially Methyl Substituted Polyazines

Authors

Benjamin Chaloner-Gill, University of Rhode Island
William B. Euler, University of Rhode IslandFollow
James E. Roberts, Lehigh University

Document Type

Article

Date of Original Version

5-1-1991

Abstract

The partially methylated polyazine series, which varies the number of methyl groups along the polyazine backbone, has been prepared. The number and substitution pattern of methyl groups were altered via a condensation reaction between an α,β-dicarbonyl and an α,β-dihydrazone using glyoxal, pyruvic aldehyde, 2,3-butanedione, glyoxal dihydrazone, pyruvic aldehyde dihydrazone, and 2,3-butanedione dihydrazone. All combinations of the above reagents were used, leading to nine different polymers. The polymers prepared with glyoxal dihydrazone exhibit hydroxy-bearing defects like those in the unsubstituted polyazine. In contrast, the polymers prepared with 2,3-butanedione dihydrazone were essentially defect-free, like the permethyl and higher alkyl polyazines. However, the polymers prepared with pyruvic aldehyde dihydrazone failed to follow a simple trend. © 1991, American Chemical Society. All rights reserved.

Publication Title, e.g., Journal

Macromolecules

Volume

24

Issue

11

Citation/Publisher Attribution

Chaloner-Gill, Benjamin, William B. Euler, and James E. Roberts. "¹³C and ¹⁵N Solid-State NMR of Partially Methyl Substituted Polyazines." Macromolecules 24, 11 (1991): 3074-3080. doi: 10.1021/ma00011a008.