Alder,K. et al., Chemische Berichte, 1961, vol. 94, p. 456 - 467
作者:Alder,K. et al.
DOI:——
日期:——
Unusual Reactions of Halo[5]metacyclophanes
作者:Geerlig W. Wijsman、Willem M. Boesveld、Marcus C. Beekman、Marcel Schreuder Goedheijt、Ben L. M. van Baar、Franciscus J. J. de Kanter、Willem H. de Wolf、Friedrich Bickelhaupt
Diels−Alder reactions with dienophiles, compounds 1 behaved like reactive dienes, adding at positions 8 and 11 of the aromatic ring. Substitution by chlorine, though, reduced the reaction rate; the unsymmetrical dienophile acrylonitrile showed little preference for the two possible regioisomeric adducts 8 and 9. Similarly, compounds 1 were unusually reactive towards acid, and interesting and unforeseen