Fluorine substituent effects on thermal isomerizations: a new thermal reaction of 1,3,5-hexatrienes
作者:William R. Dolbier、Keith Palmer、Henryk Koroniak、Hua Qi Zhang、Virgil L. Goedkin
DOI:10.1021/ja00003a059
日期:1991.1
Fluorine substituents have been observed to have a remarkable effect upon the rate and stereochemical outcome of the butadiene-cyclobutene thermal conrotatory 4π-electron electrocyclic interconversion. The substituenteffects observed in this system and in other pericyclic systems have enhanced one's understanding of the mechanisms of such reactions, such that only a small probable effect of fluorine