BF<sub>2</sub>OBn·OEt<sub>2</sub>: A Lewis Acid, Its Use in a Regio- and Stereoselective Opening of Trisubstituted Epoxides, and Its Application towards Amphidinolide C and F
作者:Nicholas A. Morra、Brian L. Pagenkopf
DOI:10.1002/ejoc.201201331
日期:2013.2
The generation of a new Lewisacid (BF2OBn·OEt2) has been reported, and its usefulness has been demonstrated in the regio- and stereoselectivering-opening of trisubstituted epoxides. This Lewisacid is one in a series of new Lewisacids generated from BF3·OEt2 that display varying levels of Lewis acidity. When paired with a modified Shi epoxidation protocol, highly functionalized propionate units