Development of Bioactive Heterocycles by Tin-Free C1 Introduction Radical Process

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Development of tin-free radical process is an important research field because of the indispensable utility of radical reactions and the toxicity of tin reagents. We have already developed dimethylzinc-and triethylborane-mediated tin-free radical processes. During this research project to increase the scope of our process, we found the acceleration effect of ferric chloride, an interesting reaction switching of alkylidenemalonate, efficient radical accepting ability of N-alkoxycarbonyl-imine, and isocyanate forming reaction of the imine.