3-ARYL- AND 2,3-DIARYL-4-OXO-4,5,6,7-TETRAHYDROINDAZOLES. 2. REACTIONS OF ARYL- AND TOSYLHYDRAZONES OF DIMEDONE AND 1,3-CYCLOHEXANEDIONE WITH SOME AROMATIC AND HETEROAROMATIC ALDEHYDES

Abstract

The reactions of the phenylhydrazone and 2-chlorophenyl-, 2,4-difluorophenyl-, 4-nitrophenyl-, and 2-pyridylhydrazones of dimedone with benzaldehyde, 4-bromo-, 4-fluoro-, 4-(dimethylamino)-, 4-nitrobenzaldehydes, 2-, 3-, and 4-pyridinecarbaldehydes and 2-thiophenecarbaldehyde have given 24 novel  2,3-diaryl-4-oxo-4,5,6,7-tetrahydroindazoles. Treatment of the tosylhydrazones of dimedone and 1,3-cyclohexanedione with pyridine- and thiophenecarbaldehydes yielded 7 novel 3-pyridyl- and 3-thienyl-4-oxo-4,5,6,7-tetrahydroindazoles.

How to Cite
Strakova, I.; Strakovs, A.; Petrova, M.  Chem. Heterocycl. Compd. 2005, 41, 1405. [Khim. Geterotsikl. Soedin. 2005, 1669.]

For this article in the English edition, see DOI 10.1007/s10593-006-0010-9