Synthesis of 3-(2-Oxo-2,3-dihydrobenzo[b]furan-3-ylidenehydrazono)-2,3-dihydrobenzo[b]furan-2-one
作者:N. A. Pulina、V. V. Zalesov、S. S. Kataev
DOI:10.1134/s1070428007060103
日期:2007.6
Reactions of benzophenone and fluoren-9-one hydrazones with (2-hydroxyphenyl)oxoacetic acid gave [carboxy(2-hydroxyphenyl)methylidenehydrazono](2-hydroxyphenyl)acetic acid which underwent intramolecular cyclization with formation of 3-(2-oxo-2,3-dihydrobenzo[b]furan-3-ylidenehydrazono)-2,3-dihydrobenzo[b]furan-2-one. The symmetric azine was also obtained by reactions of (2-hydroxyphenyl)oxoacetic acid with triphenylphosphoranylidenehydrazones derived from benzophenones, fluoren-9-one, and 1-methyl-2,3-dihydro-1H-indole-2,3-dione.
TAYLOR, E. C.;HALEY, N. F.;CLEMENS, R. J., J. AMER. CHEM. SOC., 1981, 103, N 26, 7743-7752
作者:TAYLOR, E. C.、HALEY, N. F.、CLEMENS, R. J.
DOI:——
日期:——
Synthesis and properties of 3-oxo-1,2-diazetidinium ylides
作者:Edward C. Taylor、Neil F. Haley、Robert J. Clemens