Bicyclic ketooxetanes 5a, 5b and 8 are formed with excellent stereoselectivity on treatment of (2-pyridylthio)glycosidic silyl enol ethers 1a, 1b and 2 with silver(I) trifluoromethanesulfonate.
在用
银(I)
三氟甲磺酸盐处理(2-
吡啶硫)糖苷
硅醇醚1a、1b和2时,形成了具有优秀立体选择性的双环酮氧杂烷5a、5b和8。