New Tridentate Carbamoylmethylphosphine Oxides: Synthesis and NMR Spectra

Autor:	S. K. Belus, Alexander S. Peregudov, N. A. Bondarenko, Oleg I. Artyushin
Rok vydání:	2020
Předmět:	010405 organic chemistry General Chemistry 010402 general chemistry 01 natural sciences Medicinal chemistry 0104 chemical sciences NMR spectra database chemistry.chemical_compound chemistry Group (periodic table) Amide Moiety sense organs Conformational isomerism
Zdroj:	Russian Journal of General Chemistry. 90:2273-2280
ISSN:	1608-3350 1070-3632
DOI:	10.1134/s1070363220120099
Popis:	Amidation of diphenylphosphorylacetic acid gave tridentate ligands Ph2P(O)CH2CON(R)· CH2CH2P(O)Ph2 (R = Me, Bu, Oct) containing a phosphoryl group in the amide moiety. According to the 1H, 13C{1H}, and 31P{1H} NMR spectra, the synthesized compounds exist in CDCl3 solution as two conformers at the ratios of ~2.5 : 1 (R = Me), 2.6 : 1 (R = Bu), and 3.0:1 (R = Oct). These ratios do not change with temperature (heating or cooling).
Databáze:	OpenAIRE
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