Diels-Alder reactions of 1,1-dimethyl-2,3,4,5-tetraphenyl-1-silacyclopentadiene, 1,1-dimethyl-2,5-diphenyl-1-silacyclopentadiene and 1,1-dimethyl-3,4-diphenyl-1-silacyclopentadiene with maleic anhydride; kinetic measurements
作者:George K. Henry、Ronald Shinimoto、Qingshan Zhou、William P. Weber
DOI:10.1016/0022-328x(88)80355-3
日期:1988.8
Diels-Alder reactions of 1,1-dimethyl-2,3,4,5-tetraphenyl-1-silacyclopentadiene, 1,1-dimethyl-2,5-diphenyl-1-silacyclopentadiene and 1,1-dimethyl-3,4-diphenyl-2-silacyclopentadiene with maleic anhydride have been carried out. The rates of these second order reactions have been measured by 1H FT NMR over a range of temperatures. Arrhenius plot of these data yield the activation parameters for these
1,1-二甲基-2,3,4,5-四苯基-1-硅环戊二烯,1,1-二甲基-2,5-二苯基-1-硅环戊二烯和1,1-二甲基-3,4的Diels-Alder反应已经进行了带有马来酸酐的-二苯基-2-硅杂环戊二烯的制备。这些二级反应的速率已通过1 H FT NMR在一定温度范围内测量。这些数据的阿累尼乌斯图得出了这些反应的激活参数。据报道,合成了1,1-二甲基-3,4-二苯基-1-硅环戊二烯。