... Tetrahedron. Volume 53, Issue 46, 17 November 1997, Pages 15701–15710. Cover image Cover image. ... Tetrahedron, 29 (1973), pp. 3497–3502 There are also a few papers that used dehydrazination as synthetic methods for heterocycles; see. ... Synth., Coll. Vol. III (1955), pp. ...