Synthesis of heterocyclic propellanes. Preparation and transannular reactions of 5-ethoxycarbonylmethylene-cyclooctanone and the corresponding oximes and hydrazones
作者:E. Malamidou-Xenikaki、D.N. Nicolaides
DOI:10.1016/s0040-4020(01)88060-1
日期:1986.1
tanone (3) is prepared by Wittig monoolefination of dione 1 with phosphorus ylide 2. Thermal transannular cyclization of oxime 6 and phenylhydrazone 12 of the ketone 3 affords 3-oxa-2-aza- and 2,3-diaza[3.3.3] propellanes 7 and 14 respectively. Irradiation of ketone 3, its oxime 9, and its dimethylhydrazone 16 furnish 9-oxa-, and 9-aza[3.3.2] propellanes 11, 10, and 17, respectively. In addition to