Gold-Catalyzed Cycloisomerization of Yne-Vinylidenecyclopropanes: A Three-Carbon Synthon for [3+2] Cycloadditions
作者:Wei Yuan、Xiangying Tang、Yin Wei、Min Shi
DOI:10.1002/chem.201304579
日期:2014.3.10
A novel type of yne‐vinylidenecyclopropanes (VDCPs) has been synthesized and applied in gold‐catalyzed cycloisomerization reactions. It was found that these compounds can undergo an intramolecular cycloisomerization and perform as a three‐carbon synthon for [3+2] cycloaddition under gold catalysis to give fused [4.3.0] and [5.3.0] bicyclic derivatives and VDCP rearranged products in moderated to good
已经合成了一种新型的炔基亚乙烯基环丙烷(VDCPs),并将其应用于金催化的环异构化反应中。已发现这些化合物可在金催化下进行分子内环异构化并作为[3 + 2]环加成反应的三碳合成子,得到稠合的[4.3.0]和[5.3.0]双环衍生物和VDCP重排产物。在温和的条件下适度到高产。在氘标记实验和DFT计算的基础上,探索了这些新型转化的底物范围,并提出了合理的反应机理。