Cascade reaction of alkynols with 1-(2-aminophenyl)prop-2-ynols to form a fused 5,5,6-tricyclic system: formation of four bonds in a single reaction
作者:Xiao-Feng Mao、Xiao-Ping Zhu、Deng-Yuan Li、Liang-Liang Jiang、Pei-Nian Liu
DOI:10.1039/c7cc04126h
日期:——
cascade reaction of internal alkynols with 1-(2-aminophenyl)prop-2-ynols has been developed to form a new N,O-containing fused 5,5,6-tricyclic skeleton. Mechanistic studies indicate that this reaction proceeds via alkynol cycloisomerization, intermolecular substitution with 1-(2-aminophenyl)prop-2-ynols, conjugated addition with alkynols and consequent cyclizations. In this way, two C-C bonds, one C-O
已开发出内部炔醇与1-(2-氨基苯基)丙-2-炔醇的新型级联反应,以形成新的含N,O的稠合5,5,6-三环骨架。机理研究表明,该反应通过炔醇环异构化,用1-(2-氨基苯基)丙-2-炔醇的分子间取代,与炔醇的共轭加成以及随后的环化而进行。通过这种方式,两个CC键,一个CO键和一个CN键形成一个环,从而在一个反应中形成三环骨架。