[1+1]-cyclization of 4-(1-adamantyl)-2,6-diformylphenol with 1,3-bis(aminoalkyl)adamantanes
摘要:
Selective [1+1]-cyclization of 4-(1-adamantyl)-2,6-diformylphenol with 1,3-bis(aminoalkyl)-adamantane under high dilution conditions in methanol was used to synthesize a new type of adamantine araliphanes, macrocyclic nitrogen-containing compounds with phenolic and adamantane fragments incorporated in the macroring. The [1+1]-cyclization reaction proceeds unusually to form, along with macrocyclic Schiff bases, methanol addition products at one of the N=CH groups of these compounds. The [1+1]-cyclization pattern is shown to depend on the reaction conditions and the structure of the starting diamine.