Kinetics and mechanism of diels-alder additions of tetracyanoethylene to anthracene derivatives-III: Effect of substituents on rates and intermediate complex formation
RMG Roberts, F Yavari
文献索引：Roberts, R. M. G.; Yavari, F. Tetrahedron, 1981 , vol. 37, # 15 p. 2657 - 2662
In Diels-Alder additions of tetracyanoethylene to 1, 2-, and 9-substituted anthracenes, formation constants (K) for the intermediate complexes have been separated from the global rate constant (k2obs). The relatively small range of values of K indicates a very small charge transfer in the complexes. The transition state for conversion of complex into adduct showed a marked degree of charge development, particularly for the 9-substituted derivatives (p=- ...
