Assembly of bicyclo[2.2.1]heptane derivatives by two types of domino reaction
Abstract
On treatment with titanium(IV) chloride, the allylsilane 1 readily cyclised by a domino-type process to give a spiro compound 6 as the main product, while the reaction of unsilylated 8 or 9 with tin(IV) chloride provided the aromatic products 7.