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Report | Regular issue | Vol 19, No. 1, 1982, pp.67-73
Published online, 1st January, 1970
DOI: 10.3987/R-1982-01-0067
Novel Heterocycles from 3-Bromo-4-bromomethylcoumarins

Vernon G. S. Box and Crement G. Humes

*Department of Chemistry, Mona Campus, , University of the West Indies, Mona, Kingston 7, Jamaica


Whereas 3-bromo-4-bromomethyl-7-methoxycoumarin reacted very reluctantly with phenoxides, it was rapidly converted into pyridinium salts by simply substituted pyridines. The novel tetracyclic salt (11) was formed from tne reaction with 2-aminopyridine. Some or the pyridinium salts show interesting pharmacological activities.