Microwave-Assisted Organocatalyzed Rearrangement of Propargyl Vinyl Ethers to Salicylaldehyde Derivatives: An Experimental and Theoretical Study
作者:David Tejedor、Leandro Cotos、Daniel Márquez-Arce、Mikel Odriozola-Gimeno、Miquel Torrent-Sucarrat、Fernando P. Cossío、Fernando García-Tellado
DOI:10.1002/chem.201503171
日期:2015.12.7
monocycles to complex fused polycyclic systems. The reaction is highly regioselective and takes place under symmetry‐breaking conditions. The preparative power of this reaction was demonstrated in the first total synthesis of morintrifolin B, a benzophenone metabolite isolated from the small tree Morinda citrifolia L. A DFT study of the reaction was performed with full agreement between calculated values and
描述了微波辅助的咪唑催化的炔丙基乙烯基醚(PVE)到多取代的水杨醛的转化。该反应在仪器上简单,可扩展,并且在起始PVE的炔丙基位置容许不同程度的取代。生成的水杨醛基序包含多种拓扑结构,从简单的芳族单环到复杂的稠合多环系统。该反应是高度区域选择性的,并且在对称性破坏条件下发生。从小树巴戟天分离出的二苯甲酮代谢物morintrifolin B的第一个全合成中证明了该反应的制备能力。L.在计算值与实验结果完全一致的情况下进行了反应的DFT研究。从理论上计算出的值支持一种多米诺机制,该机制包括炔丙基克莱森重排,[1,3] -H位移,[1,7] -H位移(烯化),6π电环化和芳构化反应。