作者:E. Taskinen、M. Anttila
DOI:10.1016/0040-4020(77)80257-3
日期:1977.1
Thermodynamics of isomerization reactions on some substituted vinyl methyl ethers have been studied for evaluating the magnitudes of the interaction energies S[R1... R2] between the substituents R1 and R2, juxtaposed in a cis position across the CC bond of vinyl ethers. The results obtained are (values given in kJ mol-1): S[Me... t-Bu]=18.2±1.0, S[Ph...i-Pr]=11±2, S[i-Pr...Et] =6.1±0.6, S[i-Pr...
已经研究了一些取代的乙烯基甲基醚上的异构化反应的热力学,以评估取代基R 1和R 2之间并列在CC的顺式位置上的相互作用能S [R 1 ... R 2 ]的大小。乙烯基醚键。获得的结果是(以kJ mol -1给出的值):S [Me ... t-Bu] = 18.2±1.0,S [Ph ... i-Pr] = 11±2,S [i-Pr。 ..Et] = 6.1±0.6,S [i-Pr ... i-Pr] = 6.0±0.6,S [0 ... t-Bu] = 2.9±0.5,S [O ... i-Pr ] = -0.7±0.5,S [O ... Et] = -1.5±0.5,S [O ... Ph] = -2.1 + -0.6,S [O ... Me] = -2.9±0.2 (符号O代表乙烯基醚的醚氧原子)。负的相互作用能值表明顺式 醚氧和有关的烷基(芳基)之间的相互作用是稳定的。