title: Synthesis and biological activity of photopolymerizable derivatives of glyphosate.
abstract: The synthesis of new acrylate and methacrylate derivatives of a glyphosate is reported. Two isomers resulting from a hindered rotation around the amide C--N bond are observed for both acrylic and methacrylic analogs, and barriers for internal rotation are obtained. Biological activity tests indicate that functionalized glyphosates possess herbicidal activity similar to that of the parent compound. Only the acrylated glyphosate derivatives undergo photopolymerization. The resulting photopolymer of acrylated glyphosate retains the biological activity. The methacrylated glyphosates are unreactive. Differential reactivity is explained by the different conformational preferences of the functionalized glyphosates. The experimental findings are supported by the results of density functional theory geometry optimizations.
authors.affiliation: Center for Photochemical Sciences and Wright Photoscience Laboratory, Bowling Green State University, Bowling Green, Ohio 43403, USA.
authors.forename: Aneta
authors.initials: A
authors.lastname: Bogdanova
authors.forename: Victoria
authors.initials: V
authors.lastname: Piunova
authors.forename: Daniel
authors.initials: D
authors.lastname: Berger
authors.forename: Andrei V
authors.initials: AV
authors.lastname: Fedorov
authors.forename: Douglas C
authors.initials: DC
authors.lastname: Neckers
mesh_terms: D000179:Acrylates / Q000737:chemistry; D005998:Glycine / Q000031:analogs & derivatives* / Q000138:chemical synthesis; D006540:Herbicides / Q000138:chemical synthesis; D008689:Methacrylates / Q000737:chemistry; D010777:Photochemistry; D011108:Polymers / Q000138:chemical synthesis*; D000097797:Glyphosate
chemical_list: D000179:Acrylates; D005998:Glycine; D006540:Herbicides; D008689:Methacrylates; D011108:Polymers; D000097797:Glyphosate