Synthesis of β-aminophosphonic acids of cyclohexane, norbornane, and bicyclooctane series
摘要:
New method for preparation of the previously unknown beta-aminophosphonic acids of cyclohexane, norbornane, and bicyclooctane series from the corresponding nitrocycloalkenylphosphonates is developed. The structure of all compounds obtained is studied by the spectral (IR and H-1 and P-31 NMR) methods.
Synthesis and structure of phosphorylated nitrocyclohexenes
摘要:
Diene condensations of 2-nitro- and 2-bromo-2-nitroethenylphosplionates with 2,3-dimethyl-1,3-butadiene, as well as with 2,4-dihydro- and 3-methyl-2,4-dihydrothiophene 1,1-dioxides that generate 1,3-butadiene and isoprene under the reaction conditions were effected. (6-Nitrocyclohex-3-en-1-yl)phosphonates and their dehydrogenation and/or dehydrohalogenation products, namely nitrocyclohexadienyl- and nitrophenyl-phosphonates were prepared. The structure of the obtained compounds was proved by IR and H-1 and P-31 NMR spectroscopy, and independent synthesis.