By treating 4-aryl-2,4-dioxobutanoic acids or their alkyl esters with diazomethane alkyl 4-aryl-2-methoxy-4-oxo-2-butenoates and 1-R-3-aroyl-4-methoxy-4-methoxycarbonyl-4,5-dihydropyrazoles were prepared. O-Alkyl derivatives and substituted pyrazoles were also obtained by reaction of 4-aryl-2,4-oxobutanoic acids aryl amides with diazomethane and diazoethane.
Andreichikov, Yu.S.; Kozlov, A.P.; Kurdina, L.N., Journal of Organic Chemistry USSR (English Translation), 1984, vol. 20, p. 752 - 756
作者:Andreichikov, Yu.S.、Kozlov, A.P.、Kurdina, L.N.
DOI:——
日期:——
Andreichikov, Yu. S.; Kozlov, A. P.; Kurdina, L. N., Journal of Organic Chemistry USSR (English Translation), 1983, vol. 19, # 8, p. 1516 - 1523
作者:Andreichikov, Yu. S.、Kozlov, A. P.、Kurdina, L. N.
DOI:——
日期:——
KOZLOV, A. P.;KUDRINA, L. N.;ANDREJCHIKOV, YU. S., POLUCH. BIOL. AKTIV. PRODUKTOV ORGAN. SINTEZA, SVERDLOVSK,(1988) S. 30-40
作者:KOZLOV, A. P.、KUDRINA, L. N.、ANDREJCHIKOV, YU. S.
DOI:——
日期:——
BRIGADNOVA, E. V.;MASLIVETS, A. N.;ANDREJCHIKOV, YU. S., ZH. ORGAN. XIMII, 26,(1990) N, S. 327-330
作者:BRIGADNOVA, E. V.、MASLIVETS, A. N.、ANDREJCHIKOV, YU. S.
DOI:——
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作者:L. N. Kurdina、V. V. Zalesov、A. P. Kozlov
DOI:10.1023/a:1022525026193
日期:——
4,N-Diaryl-1,5-benzodiazepine-2-carboxamides were synthesized by acid-catalyzed reaction of (Z)-4,N-diaryl-2-hydroxy-4-oxo-2-butenamides with o-phenylenediamine or N,N'-bis(triphenylphosphoranediyl)-o-phenylenediamine. The reaction mechanism is discussed.