Naphtho[1,2-<i>c</i>:5,6-<i>c</i>]difuran: A Reactive Linker and Cyclophane Precursor
作者:Michelle E. Thibault、Taunia L. L. Closson、Sidney C. Manning、Peter W. Dibble
DOI:10.1021/jo034777x
日期:2003.10.1
Naphtho[1,2-c:5,6-c]difuran has been isolated in a 9-step synthesis from 2,6-dimethylnaphthalene. It is a highly reactive diene similar in nature to the related isobenzofuran. In Diels-Alder reactions, its intermediate monoadducts are actually less reactive that the parent difuran making possible sequential Diels-Alder reactions with different dienophiles. Reaction with a tethered bis(dienophile) leads