Organophosphorus herbicides and plant growth regulators part 1. Synthesis and protonation behaviour of glyphosate and related compounds | Zendy

Dhansay M. A. | Zendy; Linder P. W. | Zendy; Torrington R. G. | Zendy; Modro T. A. | Zendy

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Organophosphorus herbicides and plant growth regulators part 1. Synthesis and protonation behaviour of glyphosate and related compounds

Author(s) -

Dhansay M. A.,

Linder P. W.,

Torrington R. G.,

Modro T. A.

Publication year - 1990

Publication title -

journal of physical organic chemistry

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.325

H-Index - 66

eISSN - 1099-1395

pISSN - 0894-3230

DOI - 10.1002/poc.610030407

Subject(s) - chemistry , potentiometric titration , protonation , glyphosate , titration , methylene , ammonium , plant growth , molecule , chemical shift , nucleus , medicinal chemistry , stereochemistry , organic chemistry , ion , botany , agronomy , biology , microbiology and biotechnology

Ionization constants of N ‐phosphonomethylglycine (glyphosate) and three structurally related plant‐growth regulators were determined by potentiometric titration. The effect of pD on the chemical shifts of the 1 H and 13 C nuclei of the methylene groups and of the 31 P nucleus in these substrates was measured by NMR spectroscopy. The results allowed an assignment to be made of a specific site (carboxylic, phosphonic, ammonium) in the molecule to each of the determined p K a values.

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