Über die Reaktionen von 2-Cyclohexenonen mit Guanidin

摘要

3-Methyl-5-phenyl-2-cyclohexenone (6 a), 3,5-dimethylcyclohexenone6 b, 3-methylcyclohexenone6 cand 2-cyclohexenone (6 d) resp. react with guanidine in toluene and methanol resp. to give the substituted 2,4-diazabicyclo3.3.1nonane-3-imines7 a-d. The condensation of isophorone6 ewith guanidine (to form7 e) could not be accomplished. The structures of the compounds7 a-dare deduced from their IR- and NMR-spectra; the mechanism and the steric course of the reaction are discussed. Salts of7 a-dwere also prepared.7 aandbshowed no significant herbicidal and only small fungicidal and insecticidal activities in screening tests.