84905-28-2Relevant academic research and scientific papers
Polarographic behavior of ethyl esters of substituted diazoacetic and diazopyruvic acids
Zalesov,Posyagin,Vyaznikova
, p. 81 - 87 (2007/10/03)
Polarographic reduction of ethyl 5-aryl-2-diazo-3,5-dioxopentanoate and ethyl 6-aryl-3-diazo-2,4,6-trioxohexanoate in isopropanol-water solutions proceeds with three or four polarographic waves and yields, depending on the pH of the solution, pyridazine or pyrazolidine derivatives.
Thermal addition reaction of aroylketene with ethyl vinyl ether: Aromatic substituent effect on aroylketene reactivity
Toda, Jun,Saitoh, Toshiaki,Oyama, Taichi,Horiguchi, Yoshie,Sano, Takehiro
, p. 2457 - 2464 (2007/10/03)
A series of aroylketenes (2) generated by thermolysis of 5-aryl-2,3-dihydrofuran-2,3-diones (1) reacted with ethyl vinyl ether under a thermal condition to give 2,3-dihydro-4H-pyran-4-ones (3) and/or 4H-pyran-4-ones (4). In this reaction the electron withdrawing substituent (NO2, Cl) introduced into the aryl part enhanced the ketene reactivity (2b-e), while the electron donating one (OMe) did not affect its reactivity (2f-g) in a significant extent. The heteroaroylketenes (2h) and (2i) showed a fairly good reactivity.
CHEMISTRY OF OXALYL DERIVATIVES OF METHYL KETONES. XXV. SYNTHESIS AND CYCLIZATION OF 2-DIAZO-1,5-DIARYL-1,3,5-PENTANETRIONES AND 2-DIAZO-5-ARYL-3,5-DIOXOPENTANOIC ESTERS
Andreichikov, Yu.S.,Gein, L.F.,Gein, V.L.
, p. 545 - 550 (2007/10/02)
2-Diazo-1,5-diaryl-1,3,5-pentanetriones and ethyl 2-diazo-5-aryl-3,5-dioxopentanoates were obtained in the reaction of 5-aryl-2,3-dihydro-2,3-furandiones with aroyldiazomethanes and diazoacetic ester.In some cases the formation of diazopentanetriones is a
