A new strategy for construction of eight-membered carbocycles by Brook rearrangement mediated [6 + 2] annulation

reaction: see text] A newly developed strategy for construction of eight-membered carbocycles via 6 + 2] annulation that involves the combination of beta-alkenoyl acylsilanes and a vinyllithium derivative is described. A unique feature of this annulative approach is that it enables in one operation and a stereoselective manner construction of eight-membered ring systems containing useful functionalities for further synthetic elaboration from readily available six- and two-carbon components.