Tetrahedron letters

Studies of mild dehydrogenations in heterocyclic systems

DR Williams, PD Lowder, YG Gu, DA Brooks

Index: Williams, David R.; Lowder, Patrick D.; Gu, Yu-Gui; Brooks, Dawn A. Tetrahedron Letters, 1997 , vol. 38, # 3 p. 331 - 334

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Citation Number: 188

Abstract

The use of bromotrichloromethane-DBU is described for the selective oxidative conversion of several dihydro-heterocyclic systems to the corresponding heteroaromatics. Oxidative dehydrogenations to afford 4-hydroxy-2-pyridinones are examined under a variety of conditions. Studies of phenylselenenylation and peracid oxidation provide the novel spirocyclic oxirane 10.

~93%

~73%

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