The Effect of Lewis Acids on the Cycloaddition of 3,3,6-Trimethylcyclohex-5-ene-1,2,4-trione: Hydrogen Transfer versus Cycloaddition with Cyclopentadiene
作者:Nicholas A. Eddy、Jay J. Richardson、Gabriel Fenteany
DOI:10.1002/ejoc.201300706
日期:2013.8
Exposure of 3,3,6-trimethylcyclohex-5-ene-1,2,4-trione to catalytic amounts of Lewis acids revealed two disparate reactions in the presence of cyclopentadiene. The expected cycloaddition was found to be reversible for the title compound, and transfer hydrogenation was the preferred pathway over long periods of time. Other tested substrates were able to undergo facile cycloaddition with considerable
将 3,3,6-trimethylcyclohex-5-ene-1,2,4-trione 暴露于催化量的路易斯酸中,在环戊二烯存在下发生了两种不同的反应。发现预期的环加成对于标题化合物是可逆的,并且转移氢化是长时间的优选途径。其他测试的底物能够以相当大的产率进行轻松的环加成反应,并且没有平行还原。