Filipan-Litvić M1, Litvić M, Vinković V.
Bioorg Med Chem. 2008 Oct 15;16(20):9276-82. doi: 10.1016/j.bmc.2008.09.004. Epub 2008 Sep 5.Rapid aromatization of Hantzsch-1,4-DHPs with t-butylhydroperoxide catalysed by iron(III) phthalocyanine chloride is described. The reaction proceeds smoothly at room temperature within 1-35 min and the products of high purity were isolated in excellent yields. To explain the reactivity of this catalytical system plausible mechanism have been proposed to involve formation of high-valent oxoferryl species as in cytochrome P450 itself.