Thallium(III) p-tosylate (TTS) mediated oxidative rearrangement of 2-naphthyl and 2-heteroarylchromanones

Kurapati, Chidvilas ; Muthukrishnan, M ; Singh, Om V; Gundla, Rambabu

Abstract

A practical and effective approach towards the synthesis of 3-hetroaryl-4H-chromen-4-ones by the oxidative rearrangement of the respective 2-hetroaryl chroman-4-ones using thallium(III) p-tosylate is described. The oxidative rearrangement of α and β-naphthyl and thiophene behave like aryl groups. However, pyridyl groups give only the dehydrogenated product.


Keyword(s)

Oxidative rearrangements, thallium(III) p-tosylate, dehydrogenation, thallium(III) acetate, 2- and 3-(β-naphthyl) chromones, 2- and 3-(2-theinyl)chromones, 2- and 3-(3-theinyl)chromones, 2-(3-pyridyl)chromones, 2-(4-pyridyl)chromones

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