Novel [6 + 2] Cycloaddition of Fulvenes with Alkenes: A Facile Synthesis of the Anislactone and Hirsutane Framework
作者:Bor-Cherng Hong、Yeong-Jou Shr、Jian-Lin Wu、Arun Kumar Gupta、Kuan-Jiuh Lin
DOI:10.1021/ol026103z
日期:2002.6.1
[reaction: see text] In contrast to the Diels-Alder reaction of fulvenes and various alkenes, 6-aminofulvenes react with maleic anhydride (or maleimide) to give [6 + 2] cycloaddition adducts, constituting an efficient and novel route to pentaleno[1,2-c]furan, pentaleno[1,2-c]pyrrole, and cyclopenta[a]pentalene skeleton.