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Paper | Regular issue | Vol 38, No. 11, 1994, pp.2433-2448
Published online, 1st January, 1970
DOI: 10.3987/COM-94-6860
N-Substituted Bromopyrazoles: Synthesis and 13C Nmr Study

Wolfgang Holzer,* Christine Jäger, and Christoph Slatin

*Institute of Organic Chemistry, University of Graz, Heinrichstr. 28, A-8010 Graz, Austria


The synthesis of N-1 substituted 4-bromo-, 3,4-dibromo- and 3,4,5-tribromopyrazoles starting from the NH-pyrazoles is described. 13C Nmr spectroscopic studies with the title compounds are presented, investigating the influence of substituents on 13C-chemical shifts and 13C, 1H spin coupling constants.