Synthesis of 3-(2-Oxo-2,3-dihydrobenzo[b]furan-3-ylidenehydrazono)-2,3-dihydrobenzo[b]furan-2-one
- 69 Downloads
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[bfuran-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.
KeywordsBenzophenone Azine Anhydrous Toluene Hydrazono Phenylphosphine Oxide
Unable to display preview. Download preview PDF.
- 1.Tomchin, A.B., Ioffe, I.S., and Rusakov, E.A., Zh. Obshch. Khim., 1971, vol. 41, pp. 1791, 1797; Zh. Org. Khim., 1972, vol. 8, p. 1295; Zh. Org. Khim., 1974, vol. 10, p. 604.Google Scholar
- 3.Ranti, C. and Collino, F., Farmaco, Ed. Sci., 1969, vol. 24, p. 577.Google Scholar
- 4.Zalesov, V.V. and Rubtsov, A.E., Khim. Geterotsikl. Soedin., 2004, p. 163.Google Scholar