Iodine-catalyzed Transformation of Aryl-substituted Alcohols Under Solvent-free and Highly Concentrated Reaction Conditions
作者:Marjan Jereb、Dejan Vražič
DOI:10.17344/acsi.2017.3841
日期:2017.12.15
transformations of alcohols under solvent-free reaction conditions (SFRC) and under highly concentrated reaction conditions (HCRC) in the presence of various solvents were studied in order to gain insight into the behavior of the reaction intermediates under these conditions. Dimerization, dehydration and substitution were the three types of transformations observed with benzylic alcohols. Dimerization
研究了碘在无溶剂反应条件下(SFRC)和高浓度反应条件(HCRC)下在各种溶剂存在下的醇催化转化反应,以了解这些条件下反应中间体的行为。二聚,脱水和取代是苯甲醇所观察到的三种类型的转化。在伯醇和仲醇的情况下,二聚和取代反应占主导,而在叔醇的情况下,脱水占主导。SFRC在I2催化的二聚反应中,取代的1-苯基乙醇的相对反应性提供了一个良好的Hammett图ρ+ = -2.8(r2 = 0.98),表明存在电子贫化的中间体,且在一定的速率下具有一定程度的发达电荷确定步骤。