Acid-promoted rearrangement of arylmethyl azides: Applications toward the synthesis of N-arylmethyl arenes and polycyclic heteroaromatic compounds
An acid-promoted Aubé-Schmidt's rearrangement of arylmethyl azides provides a useful in situ iminium ion intermediate, which can be efficiently trapped by various nucleophiles. We report here the reaction of this iminium ion with aromatic nucleophiles to
A new intermolecular photochemical approach to calix[4]arene synthesis
Calix[4]arene analogs 4a and b were obtained in 15 and 13% yields, respectively, by intermolecular [2 + 2] photocycloaddition. The conformations of 4a and b are assigned to be 1,2-alternate form and cone one, respectively. The calix[4] arenes 5a and b hav
Okada, Yukihiro,Hagihara, Masatoshi,Mineo, Masatoshi,Nishimura, Jun