Thomas Zimmermann Klaus Schmidt
Ring transformations of heterocyclic compounds. XIII. Bis(2,4,6-triarylphenyl) substituted bispyridinium salts from methyl derivatives by double pyrylium and thiopyrylium ring transformations.
Journal of Heterocyclic Chemistry, 1996, 33 (3), 783–787
- DOI:
http://dx.doi.org/10.1002/jhet.5570330342
