Switching between Novel Samarium(II)-Mediated Cyclizations by a Simple Change in Alcohol Cosolvent
作者:Thomas K. Hutton、Kenneth W. Muir、David J. Procter
DOI:10.1021/ol0358399
日期:2003.12.1
undergo two very different stereoselective cyclization reactionsmediated by samarium(II) iodide depending upon the alcohol cosolvent used in the reaction. Switching between an unprecedented aldol spirocyclization and a novel cyclobutanol-forming process can be achieved simply by changing the alcohol cosolvent from methanol to tert-butyl alcohol. [reaction: see text]