6. Chiral oxime ethers in asymmetric synthesis. Part 5.1 Asymmetric synthesis of 2-substituted 5- to 8-membered nitrogen heterocycles by oxime addition–ring-closing metathesis James C. A. Hunt,Pierre Laurent,Christopher J. Moody J. Chem. Soc. Perkin Trans. 1 2002 2378
7. Allene-based electrophile-mediated cyclisations: efficient synthesis of medium ring azacycles Robert W. Shaw,Timothy Gallagher J. Chem. Soc. Perkin Trans. 1 1994 3549