Azafulvenium methides : new extended dipolar systems

Sutcliffe, O B and Storr, R C and Gilchrist, T L and Rafferty, P and Crew, A P A (2000) Azafulvenium methides : new extended dipolar systems. Chemical Communications (London) (8). pp. 675-676. ISSN 0009-241X (https://doi.org/10.1039/B001521K)

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Abstract

The transient 8 pi 1,7-dipolar azafulvenium methides 5 and 8 undergo sigmatropic [1,8] H shifts and the acyl derivatives 12 electrocyclise to give novel pyrrolooxazines 13; the related diazafulvenium methide 15 can be intercepted in 8 pi + 2 pi cycloadditions with silylated acetylenes.