[1 + 4]Cycloaddition of Isocyanides with 2-Acetyl-1,4-benzoquinone; a Convenient Synthesis of Isobenzofuran-4,7-quinones
Abstract
Isocyanides undergo formal [1+4]cycloaddition with 2-acetyl-1,4-benzoquinone to afford isobenzofuran-4,7-quinone derivatives.