Nickel-mediated stereocontrolled synthesis of spiroketals via tandem cyclization–coupling of β-bromo ketals and aryl iodides
作者:Yu Peng、Xiao-Bo Xu、Jian Xiao、Ya-Wen Wang
DOI:10.1039/c3cc47780k
日期:——
A ketal-tether approach for the stereoselective synthesis of [5,5] and [5,6]-spiroketals based on reductive coupling catalyzed by the readily available Ni complex is demonstrated. Either an intermolecular or an intramolecular stereospecific cascade has been achieved as well.