6π/10π-Electrocyclization of ketene-iminium salts for the synthesis of substituted naphthylamines
作者:Emmanuelle Villedieu-Percheron、Saron Catak、Didier Zurwerra、Roman Staiger、Mathilde Lachia、Alain De Mesmaeker
DOI:10.1016/j.tetlet.2014.02.135
日期:2014.4
from ketene-iminium salts was developed for the preparation of naphthylamines. Various substituents on the nitrogen, on the aromatic ring, and on the olefin were studied. Tricyclic skeletons were obtained in few steps and good overall yields. The electrocyclization of ketene-iminium salts has been computationally explored by means of DFT calculations and their activation barriers were compared to the
从乙烯酮-亚胺盐的分子内6π/10π电环化被开发用于萘胺的制备。研究了氮,芳环和烯烃上的各种取代基。三环骨架仅需几个步骤即可获得,并具有良好的整体收率。烯酮-亚胺盐的电环化已经通过DFT计算进行了探索,并且将它们的活化势垒与母体三烯以及相应的二烯基烯丙基和二烯基烯酮进行了比较。乙烯酮-亚胺盐的电环化显示出很高的能量,并且对活化的阻隔性小得多。