Thermal and Sonochemical Studies on the Diels−Alder Cycloadditions of Masked <i>o</i>-Benzoquinones with Furans: New Insights into the Reaction Mechanism
作者:Martín Avalos、Reyes Babiano、Noemi Cabello、Pedro Cintas、Michael B. Hursthouse、José L. Jiménez、Mark E. Light、Juan C. Palacios
DOI:10.1021/jo0348322
日期:2003.9.1
What does a Diels-Alder cycloaddition look like? This question is here addressed in the case of the increasingly significant cycloadditions of masked o-benzoquinones (MOBs), which serve as versatile dienes for the construction of complex and functionalized structures. So first, what the mechanism is not: It is not (by and large) a classical, concerted [4 + 2] cycloaddition. Experimental evidence is