N-ALKYLATION OF PYRAZOLES WITH MANNICH BASES DERIVED FROM <i>ortho</i>-HYDROXYACETOPHENONES

Authors

  • Gh. Roman Transilvania University, Chemistry Department, RO-2200 Brasov
  • E. Comanita Gh. Asachi Technical University, Department of Organic Chemistry, RO - 6600 IASI
  • B. Comanita National Research Council of Canada, Institute for Chemical Process and Environmental Technology, KIA OR6 Ottawa

Keywords:

Mannich bases, pyrazole N-alkylation, ortho-hydroxyacetophenones

Abstract

The involvement of Mannich bases derived from ortho-hydroxyacetophenones in amine-exchange reactions with pyrazole and methyl- and/or halogen-substituted pyrazoles was studied. The corresponding β-(pyrazol-1-yl)ethyl ketones resulted in excellent yield and were characterized by elemental analysis, IR, and 1H and 13C NMR spectroscopy.

How to Cite
Roman, Gh.; Comanita, E.; Comanita, B. Chem. Heterocycl. Compd. 2002, 38, 1072. [Khim. Geterotsikl. Soedin. 2002, 1 .]

For this article in the English edition, see DOI https://doi.org/10.1023/A:1021201214319

Downloads

Published

2002-09-25

Issue

No. 9 (2002)

Section

Original Papers