Cascade Skeletal Rearrangement of Gold Carbene Intermediates: Synthesis of Medium‐Sized Pyrimidine‐Fused Benzolactones
作者:Ali Wang、Xiaoping Hu、Xin Xie、Yuanhong Liu
DOI:10.1002/adsc.202100572
日期:2021.8.3
A gold-catalyzed cyclization/cascade skeletal rearrangement of o-cyanophenylalkynones with 3-amino-benzo[d]-isoxazoles has been developed, which provides an approach for synthesizing medium-sized benzolactones. Based on the experimental results, we postulate that the initial nucleophilic attack occurs preferentially at the keto moiety instead of the gold-carbene. This reactivity initiates an attractive
已经开发出金催化的邻氰基苯基炔酮与 3-氨基-苯并[ d ]-异恶唑的环化/级联骨架重排,这为合成中等大小的苯内酯提供了一种方法。根据实验结果,我们假设初始亲核攻击优先发生在酮基部分而不是金卡宾。这种反应引发了一个有吸引力的级联过程,包括卡宾转移、1,2-芳基迁移、环加成、扩环等,导致初始底物的多重键断裂。