Pevzner, L. M.; Ignat'ev, V. M.; Ionin, B. I., Journal of general chemistry of the USSR, 1992, vol. 62, # 4.1, p. 658 - 662
作者:Pevzner, L. M.、Ignat'ev, V. M.、Ionin, B. I.
DOI:——
日期:——
Enol phosphates of phosphorylated derivatives of furylacetic aldehyde and furylpiruvic acid
作者:L. M. Pevzner
DOI:10.1134/s1070363214110188
日期:2014.11
Phosphorylated derivatives of isomeric furylacetic aldehydes and furylpiruvic acids have been synthesized via formylation and oxalylation of dialkyl (ethoxycarbonylfuryl)methanephosphonates under conditions of the Claisen reaction. H-1, C-13, and P-31 NMR spectroscopy studies have shown that the products exist as equilibrium mixtures of the carbonyl compounds and its E- and Z-enol forms in chloroform solutions. Acylation of these substances with diethyl chlorophosphate has yielded the corresponding enol phosphates. Influence of the substituents location in the furan ring on predominance of cis- or trans-configuration has been demonstrated.
Acylation of diethyl (ethoxycarbonylfuryl)methanephosphonates under the conditions of claisen reaction
作者:L. M. Pevzner
DOI:10.1134/s1070363212120067
日期:2012.12
O,O-Diethyl (ethoxycarbonylfuryl)methanephosphonates are formylated with ethyl formate in the presence of sodium foil at the methylene group adjacent to phosphorus atom to form sodium salts of phosphonoacetic aldehyde. When the substituents in the furan ring are remote from one another, and also in the case of 3, 4-disubstituted isomer these salts in DMSO solution exist in the carbanion form. Anions of salts of (2-ethoxycarbonylfur-3-yl)phosphonoacetic aldehyde and the isomer with the reversed location of substituents in DMSO solution take part in the dynamic equilibrium between the carbanion and the enolate form. The alkylation of all salts obtained with allyl bromide and dimethyl sulfate proceeds exclusively at the oxygen to form a mixture of Z- and E-isomers of phosphorylated vinyl ethers.
Synthesis of 2-substituted 3,4-bis(diethoxyphosphorylmethyl)furans
作者:L. M. Pevzner
DOI:10.1134/s1070363215020139
日期:2015.2
Bromination of ethyl 4-(diethoxyphosphorylmethyl)-5-methylfuran-2-carboxylate and 4-(diethoxyphosphorylmethyl)-5-methylfuran-2-carbonitrile with N-bromosuccinimide followed by phosphorylation via the Arbuzov reaction have yielded the corresponding 2-substituted 4,5-bis(diethoxyphosphorylmethyl)furans. Synthesis and transformations of bisphosphorylated 2-furoic acid and its derivatives are described.
Pevzner, L. M.; Ignat'ev, V. M.; Ionin, B. I., Russian Journal of General Chemistry, 1994, vol. 64, # 7.1, p. 1000 - 1004