Alcoholysis Equilibria of Dialkoxydimethylsilanes Catalyzed by Iodine or Iodine Monobromide
作者:Katsuko Ito、Takeshi Ibaraki
DOI:10.1246/bcsj.56.295
日期:1983.1
especially favorable catalyst for the study of the alcoholysis equilibria of dialkoxydimethylsilanes by gas chromatography. Iodine monobromide was employed to promote the reactions associated with tertiary alcohols, and iodine was used for the other reactions. Eight alcohols were allowed to react with diethoxydimethylsilane, and successive equilibrium constants, K1 and K2 were determined at 20 °C. K1=2.36–2
发现碘或一溴化碘是通过气相色谱法研究二烷氧基二甲基硅烷的醇解平衡的特别有利的催化剂。一溴化碘用于促进与叔醇相关的反应,碘用于其他反应。让八种醇与二乙氧基二甲基硅烷反应,并在 20 °C 下测定连续的平衡常数 K1 和 K2。观察到 K1=2.36-2.75 和 K2=0.66-0.69(通过使用伯醇),K1=1.34-1.38 和 K2=0.28-0.30(仲醇),以及 K1=0.15-0.16(叔醇)。这些值准确地表达了三组醇与二乙氧基二甲基硅烷的反应性差异。在本研究中使用的二烷氧基二甲基硅烷中,分离并表征了八种未报告的化合物。