Abstract
AbstractThe reaction of the 4,4‐dialkylated 2‐cyclohexenones 1 or 2 with a twofold excess of a secondary amine 3 affords the 2‐amino‐1,3‐cyclohexadienes 4 and 5, respectively. Irradiation (λ ≧ 300 nm) of the morpholino derivative 4a yields a mixture of the isomeric 3‐morpholino‐6‐methyl‐1,3,5‐heptatrienes 6 and 7, while 5 gives only one corresponding product 8. The reaction of enone 1 with an equimolar amount of pyrrolidine (3c) affords the bis‐enamine 9 which is converted to the unsaturated diketone 10 by oxidative hydrolysis.
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