Modern Friedel-Crafts chemistry. Part 32. Facile synthesis of some new fused heteropolycycles via direct intramoleclar Friedel-Crafts cyclialkylations of suitable heteroarylalkanols
作者:Ali Ali Khalaf、Ahmed M. El-Khawaga、Ibrahim M. Awad、Hassan A. K. Abd El-Aal
DOI:10.3998/ark.5550190.0011.a28
日期:——
for the synthesis of some novel fused heteropolycycles. Thus, a variety of fused di-, tri- and tetracyclic nitrogen and nitrogen-sulfur heteropolycycles 8, 9, 11-15 were smoothly synthesized by Friedel-Crafts intramolecular alkylations of heteroarylalkanols 1-7 in the presence of both Bronsted (PPA and PTSA) and Lewis (AlCl3/CH3NO2) acid catalysts. The precursor alkanols were readily prepared by reaction