Reactivity of 2-Halo-2<i>H</i>-azirines. 1. Reactions with Nucleophiles
作者:Teresa M. V. D. Pinho e Melo、Cláudia S. J. Lopes、António M. d'A. Rocha Gonsalves,、Ana M. Beja、José A. Paixão、Manuela R. Silva、Luiz Alte da Veiga
DOI:10.1021/jo010504v
日期:2002.1.1
Nucleophilic substitution reactions of 2-halo-2H-azirines 1a, 1b, 1d, and 1e with potassium phthalimide and aniline allowed the preparation of new substituted 2H-azirines 2-5. The reactions of 2-bromo-2H-azirine la with methylamine led to the synthesis of alpha-diimines 7 and 8. 2-Halo-2H-azirines were also established as building blocks for the synthesis of a range of heterocyclic compounds, namely, quinoxalines 10a-10d, 3-oxazoline 14, and 2H-[1,4]oxazines 18 and 20. X-ray crystal structures of a-diimine 7, 3-oxazoline 14, and 2H-[1,4]oxazine 18 are reported.