Rates and equilibria of keto–enol and –enolate ion interconversion in the 2,4,6-trimethylacetophenone system. Reinvestigation of the unusual bromination reaction
作者:A. J. Kresge、N. P. Schepp
DOI:10.1039/c39890001548
日期:——
The bromination of 2,4,6-trimethylacetophenone, whose unusual kinetics were once thought to be the result of slow, sterically hindered addition of bromine to the enol, was found to be a ring-rather than a side-chain-substitution reaction; kinetic and themodynamic characteristics of this keto–enol system were determined by a combination of flash-photolytic and conventional kinetic techniques and were
2,4,6-三甲基苯乙酮的溴化反应是环而不是侧链取代反应,曾被认为是缓慢的,空间受阻的向烯醇中添加溴的结果。酮-烯醇体系的动力学和热力学特性是通过快速光解法和常规动力学技术相结合确定的,与母体(未取代的)苯乙酮酮-烯醇体系几乎没有什么不同。