Stereoselective synthesis of tetrahydroindolizines via catalytic formation of pyridinium ylides from diazo compounds
Day, Jonathan and McKeever-Abbas, Ben and Dowden, James (2016) Stereoselective synthesis of tetrahydroindolizines via catalytic formation of pyridinium ylides from diazo compounds. Angewandte Chemie International Edition, 55 (19). pp. 5809-5813. ISSN 1521-3773
Commercially available iron (III) and copper (I) complexes catalyze new multicomponent cycloadditions between diazo compounds, pyridines and electrophilic alkenes to give alkaloid-inspired tetrahydroindolizidines in high yields and diastereoselectivities. Hitherto, catalytic formation of versatile pyridinium ylides from metal carbenes has been poorly developed; the broad utility demonstrated herein sets the stage for invention of further multicomponent reactions in future.
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