Synthesis of Cyclic Azomethine Imines by Cycloaddition Reactions of <i>N</i>-Isocyanates and <i>N</i>-Isothiocyanates
作者:Amanda Bongers、Indee Ranasinghe、Philippe Lemire、Alyssa Perozzo、Jean-François Vincent-Rocan、André M. Beauchemin
DOI:10.1021/acs.orglett.6b01788
日期:2016.8.5
2]-cycloaddition reactions to form azomethine imines containing triazolone, triazole–thione, and pyrazole–thione cores. First, iminoisothiocyanates are shown to undergo aminothiocarbonylation reactions with strained alkenes, and a comparison with recently reported reactions of iminoisocyanates highlights their reduced reactivity. In contrast, amino(thio)carbonylation reactions of imines with iminoisocyanates
Synthesis and Reactivity of Unsymmetrical Azomethine Imines Formed Using Alkene Aminocarbonylation
作者:Wei Gan、Patrick J. Moon、Christian Clavette、Nicolas Das Neves、Thomas Markiewicz、Amy B. Toderian、André M. Beauchemin
DOI:10.1021/ol400542b
日期:2013.4.19
Complex cyclic azomethine imines possessing a beta-aminocarbonyl motif can be accessed readily from simple alkenes and hydrazones. This alkene aminocarbonylation approach allows formation of ketone-derived azomethine imines of unprecedented complexity. Since unsymmetrical hydrazones are used, two stereoisomers are formed: the reactivity of chiral derivatives is explored in both intra- and intermolecular systems.