First Partially Intramolecular Palladium-Catalyzed [2+2+2] Cycloaddition of Benzyne: Application to the Synthesis of Benzo[b]fluorenones
作者:Diego Peña、Dolores Pérez、Enrique Guitián、Luis Castedo
DOI:10.1002/ejoc.200390178
日期:2003.3
by the steric and electronic properties of the diynes and proved to be regioselective when an unsymmetrically substituted aryne is used. This work represents the first example of a partially intramolecular [2+2+2] cycloaddition involving arynes. (© Wiley-VCH Verlag GmbH & Co. KGaA, 69451 Weinheim, Germany, 2003)
描述了钯 (0) 催化的苄与适当官能化的苯二炔反应以提供苯并 [b] 芴酮。反应的结果受二炔的空间和电子性质的影响,并且当使用不对称取代的芳烃时证明是区域选择性的。这项工作代表了涉及芳烃的部分分子内 [2+2+2] 环加成的第一个例子。(© Wiley-VCH Verlag GmbH & Co. KGaA, 69451 Weinheim, Germany, 2003)