Pd<sup>II</sup>-Catalyzed Spiroketalization of Ketoallylic Diols
作者:Jean A. Palmes、Paulo H. S. Paioti、Leonardo Perez de Souza、Aaron Aponick
DOI:10.1002/chem.201301723
日期:2013.8.26
at 0 °C, these dehydrative cyclization reactions require only mild conditions to produce vinyl‐substituted spiroketals in high yields after brief reaction times with water as the only byproduct. Using this method, the stereochemical information embedded at the nucleophile is transmitted “down‐the‐chain” and efficiently sets the stereochemistry at both the anomeric carbon atom and the newly formed allylic