Acid-promoted reaction of cyclic allylic diols with carbonyl compounds. Stereoselective ring-enlarging tetrahydrofuran annulations
作者:Mark J. Brown、Timothy Harrison、Paul M. Herrinton、Mark H. Hopkins、Kira D. Hutchinson、Larry E. Overman、Pratibha Mishra
DOI:10.1021/ja00014a031
日期:1991.7
high levels of stereocontrol by the title reaction. The scope and limitations of this powerful new method for assembling polycyclic ethers are explored in detail. Conformational analysis of potential oxabicyclo [4.4.0] decanyl, oxabicyclo [4.3.0] nonanyl, and oxabicyclo [4.2.0] octanyl cation intermediates allows the stereochemical outcome of the title reaction to be predicted