Synthesis of Five-Membered Cyclic Ethers by Reaction of 1,4-Diols with Dimethyl Carbonate
作者:Fabio Aricò、Pietro Tundo、Andrea Maranzana、Glauco Tonachini
DOI:10.1002/cssc.201100755
日期:2012.8
The reaction of 1,4‐diols with dimethyl carbonate in the presence of a base led to selective and high‐yielding syntheses of related five‐membered cyclic ethers. This synthetic pathway has the potential for a wide range of applications. Distinctive cyclic ethers and industrially relevant compounds were synthesized in quantitative yield. The reaction mechanism for the cyclization was investigated. Notably
1,4-二醇与碳酸二甲酯在碱存在下的反应导致相关五元环醚的选择性和高产合成。这种合成途径具有广泛的应用潜力。以定量产率合成了独特的环状醚和工业上相关的化合物。研究了环化反应的机理。值得注意的是,维持了原料的手性。DFT计算表明,从能量上讲,五元环醚的形成是最有利的途径。通常,可以基于硬-软酸碱理论对这些系统表现出的选择性进行合理化。就计算的能源壁垒而言,这些原则是适用的,