A Doubly Biomimetic Synthetic Transformation: Catalytic Decarbonylation and Halogenation at Room Temperature by Vanadium Pentoxide
作者:Sujoy Rana、Bhawana Pandey、Aniruddha Dey、Rameezul Haque、Gopalan Rajaraman、Debabrata Maiti
DOI:10.1002/cctc.201600843
日期:2016.11.8
intermediate vanadium‐oxo‐peroxo species, which was characterized by using 51 V NMR, UV/Vis, and resonance Raman spectroscopy. Further detection of formic acid from the reaction mixture confirmed the biomimetic aspects of decarbonylative halogenation. A detailed experimental and DFT study indicated a concerted mechanism for this decarbonylative halogenation performed under simple and mild reaction conditions
金属-过氧-过氧物种对CH键的卤化和金属-过氧-物种对醛的脱羰是在生物系统中常规进行的。但是,金属介导的脱羰卤化反应本质上是未知的。在这项工作中,我们表明,广泛使用的V 2 O 5和VO(acac)2(acac =乙酰丙酮)可以通过生成中间钒-氧-过氧物质来催化脱羰卤化反应,其特征是使用51 1 H NMR,UV / Vis和共振拉曼光谱。从反应混合物中进一步检测甲酸证实了脱羰基卤化的仿生方面。详尽的实验和DFT研究表明,在简单温和的反应条件下进行该脱羰基卤化反应的协调机制。