Selective, one-pot synthesis of 2,3,6-trisubstituted pyridine and 2-cyclohexen-1-one derivatives from bicyclic ketals
作者:Jong-Gab Jun、Tae Hee Ha
DOI:10.1002/jhet.5570340151
日期:1997.1
Boron difluoromethanesulfonate, prepared from 5 equivalents of trimethylsilyl methanesulfonate and 1 equivalent of borontrifluoride etherate, has proved to be an active Lewis acid catalyst for the one-pot transformation reaction of bicyclic ketals in the 6,8-dioxabicyclo[3.2.1]octane series to 2,3,6-trisubstituted pyridine or 2-cyclohexen-1-one selectively, depending on conditions. A 1,5-diketone
A novel one step preparation of 2,6-disubstituted pyridines from bicyclic ketals
作者:Jong-Gab Jun、Hyun Shun Shin
DOI:10.1016/s0040-4039(00)61321-7
日期:1992.8
6,8-Dioxabicyclo[3.2.1loctanes(1) were readily converted to 2,6 disubstituted pyridine derivatives(2) in one step by treatment with AlCl3,-NH2OH·HCl/AcOH.