Studies in decarboxylation. Part 16. Steric inhibition of resonance in a 1,5-sigmatropic reaction
作者:Amal al-Borno、David B. Bigley
DOI:10.1039/p29830001311
日期:——
The rates of gas-phase decarboxylation of some 3-phenyl-substituted but-3-enoic acids are best rationalized in terms of stericinhibition of resonance in the more sterically crowded members.
就空间更拥挤的成员的共振的空间抑制而言,一些3-苯基取代的丁-3-烯酸的气相脱羧速率是最合理的。
Studies in decarboxylation. Part VI. A comparison of the transition states for the decarboxylation of β-keto- and βγ-unsaturated acids
作者:D. B. Bigley、J. C. Thurman
DOI:10.1039/j29680000436
日期:——
The effect of substituents on the rate of thermal decarboxylation of βγ-unsaturated acids is compared to their effect on the decarboxylation of β-keto-acids. From the close similarity observed, it is argued that the reactions have nearly identical transition states. It is demonstrated that the transition state for the olefinic acids is largely non-polar; by analogy, the keto-acids are concluded to