Synthesis of 2,5-dihydrobenzo[b]oxepins and 5,6-dihydro-2H-benzo[b]oxocines based on [3+3] cyclizations of 1,3-bis(silyl enol ethers)

Abstract: Functionalized 2,5-dihydrobenzo[b]oxepins and 5,6-dihydro-2H-benzo[b]oxocines were prepared based on a ‘[3+3] cyclization–olefin-metathesis’ strategy. [Copyright &y& Elsevier]