UNEXPECTED CYCLIZATION ROUTE FOR <i>o</i>-ETHYNYLBENZOIC ACIDS HYDRAZIDES IN THE PRESENCE OF BASE

Authors

  • С. Ф. Василевский Institute of Chemical Kinetics and Combustion, Siberian Branch of the Russian Academy of Sciences, Novosibirsk 630090
  • Т. Ф. Михайловская Institute of Chemical Kinetics and Combustion, Siberian Branch of the Russian Academy of Sciences, Novosibirsk 630090

DOI:

https://doi.org/10.1007/6879

Keywords:

arylacetylenes, benzopyridazinones, ethynylbenzoic acids esters, isoindolinones, heterocyclization, cross coupling, reactions with hydrazine

Abstract

The reaction of o-ethynylbenzoic acids hydrazides  with base has been studied. In the presence of a strong donor substituent (1,5-dimethylpyrazol-4-yl) it has been found that an unusual cyclization route occurs to give the corresponding benzopyridazinone instead of the expected isoindolinone.

How to Cite
Vasilevsky, S. F.;  Mikhailovskaya, T. F.  Chem. Heterocycl. Compd. 2009, 45, 55. [Khim. Geterotsikl. Soedin. 2009, 67.]

For this article in the English edition see DOI 10.1007/s10593-009-0225-7

 

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Published

2022-07-06

Issue

No. 1 (2009)

Section

Original Papers