Palladium-Catalyzed One-Step Preparation of Novel Tricyclic Phenoxazine, Phenazine, and Dioxine Derivatives

Abstract

Reaction of cyclic meso allylic diacetates 5 and 6 with various 2-aminophenols, benzene-1,2-diamine, and benzene-1,2-diol in the presence of a palladium-phosphine catalyst gave novel phenoxazine, phenazine, and dioxine derivatives 7, 11, and 12 in moderate to excellent yields.

Key words

tandem reaction - palladium catalyst - allylic substitution - phenoxazine - meso compound

References

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• 4c

  The palladium-catalyzed 1,4-diacetoxylation of cyclopentadiene gave low yield of 5 (<20%).

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