THERMOLYSE ET PHOTOLYSE DE CETONES NON SATUREES-XXVIII DOUBLE THERMOCYCLISATION DES BIS(BUTENE-3'YL)-3,3- ET BIS(BUTYNE-3'YL)-3,3-CYCLOPENTANONES:PROPELLANONES FONCTIONNALISEES EN 2,8,9

Article abstract of DOI:10.1016/0040-4020(80)87019-0

Two ββ-dialkenyl- and ββ-dialkynyl-cyclopentanones 3 and 5 were synthesised using mixed methyl or t-buthyl magnesiocuprates R2MeCu(MgX)2 and R2t-BuCu(MgX)2, where R is the alkenyl or alkynyl residue.Their thermal cyclisation leads to 2,8,9-functionalised <3.3.3>propellanones.