Five-membered ring systems: furans and benzofurans

This chapter covers work published in the calendar year 2020. References to new naturally occurring furans, dihydrofurans, and tetrahydrofurans are given. New methods for the ring synthesis of furans, dihydrofurans, and tetrahydrofurans and benzofurans are discussed. Novel reaction chemistry of furans, dihydrofurans, and tetrahydrofurans and benzofurans is covered.