SYNTHESIS OF SPIRANES BY CYCLOCONDENSATION OF 2-PHENACYLBENZOTHIAZOLE WITH HYDRAZINES AND <i>o</i>-HYDROXYBENZALDEHYDES

Authors

  • А. B. Выпирайленко Institute of Organic Chemistry, National Academy of Sciences of Ukraine, Kiev
  • И. Б. Дзвинчук Institute of Organic Chemistry, National Academy of Sciences of Ukraine, Kiev
  • М. O. Лозинский Institute of Organic Chemistry, National Academy of Sciences of Ukraine, Kiev

Keywords:

benzopyrans, benzothiazoles, hydrazones, pyrazoles, spiranes, isomerism

Abstract

2-Phenacylbenzothiazole reacts with hydrazines and o-hydroxybenzaldehydes to give hydrazones and chalcones. These compounds tend to isomerize to benzothiazole-2-spiro-3'-pyrazoles and benzo[b]pyran-2-spiro-2'-benzothiazoles, respectively.

How to Cite
Vypirailenko, A. V.; Dzvinchuk, I. B.; Lozinskii, M. O. Chem. Heterocycl. Compd. 2003, 39, 123. [Khim. Geterotsikl. Soedin. 2003, 131.]

For this article in the English edition, see DOI https://doi.org/10.1023/A:1023089212894

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Published

2003-01-25

Issue

No. 1 (2003)

Section

Original Papers