Synthesis of β-Aminophosphonates and Study of Their Acid-Base Properties and Phase Distribution in Water-Organic Solvent Systems
作者:R. A. Cherkasov、V. I. Galkin、N. G. Khusainova、O. A. Mostovaya、A. R. Garifzyanov、G. Kh. Nuriazdanova、N. S. Krasnova、E. A. Berdnikov
DOI:10.1007/s11178-005-0370-0
日期:2005.10
New and previously known β-aminoethylphosphonates were synthesized by addition of primary and secondary amines to vinylphosphonates, and their IR and NMR spectra were examined. Diethyl 2-diethylaminoethylphosphonate and diethyl 2-morpholinoethylphosphonate were found to be stronger bases than the corresponding aminomethylphosphonates, but all these are weaker bases than their precursors, nonphosphorylated amines. Distribution constants of β-aminophosphonates between water and some organic solvents were determined and compared with those of their α-amino homologs.
通过在乙烯基膦酸盐中加入伯胺和仲胺,合成了新的β-氨基乙基膦酸盐和以前已知的β-氨基乙基膦酸盐,并研究了它们的红外光谱和核磁共振光谱。研究发现,2-二乙氨基乙基膦酸二乙酯和 2-吗啉基乙基膦酸二乙酯是比相应的氨基甲基膦酸盐更强的碱,但所有这些碱都比它们的前体--非磷酸化胺弱。测定了 β-氨基膦酸盐在水和一些有机溶剂中的分布常数,并将其与α-氨基同系物的分布常数进行了比较。