Intermolecular Enamine Mizoroki-Heck Reactions on a Bio-Derived Scaffold
Johannes Puschnig1, Martyn Jevric1, Christopher J Sumby2
1Faculty of Medicine and Health, University of New England, Armidale, NSW 2351, Australia.
Abstract:
The intramolecular enamine-Mizoroki-Heck reaction allows for the construction of nitrogen-containing heterocycles, although the related intermolecular version is less known. The reactions of enamines derived from Cyrene were investigated under Mizoroki-Heck conditions. An optimization study was used to identify that 1.5 mol % Pd(dba)2 with PCy3 in xylene at reflux temperature gave the highest yield with electron-rich aryl iodides. Arylation occurred predominantly at the C-N center of the enamine, while the diastereoselectivity was dependent on the nitrogen substitution in the enamine.
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