Synthesis of C-heteryl-substituted aminomethylphosphonic acids derivatives
摘要:
The available diethyl 5-hydrazino-2-p-tolyl-1,3-oxazol-1-ylphosphonate was readily acylated with chlorides of carboxylic acids of heterocyclic series. On heating in acetic acid it underwent the oxazole ring cleavage, recyclization and diethylation that was used to prepar the substituted 2-p-toluylaminomethylphosphonic acids containing a series of 2-heteryl-1,3,4-oxadiazol-5-yl residues in the alpha-position relative to the phosponyl group.
Reaction of diethyl 1-acylamino-2,2-dichloroethenylphosphonates with amino acids esters
作者:K. M. Kondratyuk、E. I. Lukashuk、A. V. Golovchenko、E. B. Rusanov、V. S. Brovarets
DOI:10.1134/s1070363212040056
日期:2012.4
Reactions of available diethyl 1-acylamino-2,2-dichloroethenylphosphonates with amino acids esters were studied, which in the case of esters of proline, nipecotic and isonipecotic acids resulted in N-substituted derivatives of 5-amino-4-diethoxyphosphoryloxazol in high yields. Their behavior in the acidic and alkaline media was investigated by the example of methyl N-(4-diethoxyphosphoryl-2-R-oxaz
Reaction of diethyl esters of 1-acylamino-2,2-dichlorovinylphosphonic acids and their analogs with the Lawesson’s reagent
作者:S. V. Popil’nichenko、K. M. Kondratyuk、R. N. Solomyannyi、V. S. Brovarets
DOI:10.1134/s1070363210100105
日期:2010.10
Diethyl esters of 1-acylamino-2,2-dichlorovinylphosphonic acids and their analogs upon heating with the Lawesson’sreagent are converted into the earlier unknown substituted 1,3-thiazol-4-ylthiophosphonates in high yields.
Lobanov, O. P.; Drach, B. S., Journal of general chemistry of the USSR, 1982, vol. 52, # 5, p. 980 - 988
作者:Lobanov, O. P.、Drach, B. S.
DOI:——
日期:——
Synthesis and some properties of 4-phosphorylated derivatives of 5-mercapto-1,3-oxazoles
作者:K. M. Kondratyuk、E. I. Lukashuk、A. V. Golovchenko、A. N. Vasilenko、V. S. Brovarets
DOI:10.1134/s1070363213010088
日期:2013.1
Various approaches to the synthesis of new derivatives of diethyl 5-mercapto-2-R-1,3-oxazole-4-ylphosphonates were considered. The behavior of these compounds in the presence of mineral acids and alkalis resulting in the synthesis of previously unknown 5-mercapto-2-R-1,3-oxazole-4-ylphosphonic acids was studied.
LOBANOV, O. P.;DRACH, B. S., ZH. OBSHCH. XIMII, 1982, 52, N 5, 1122-1131