Formation of aziridine and cyclopropane rings in reaction of quinozalines and naphthyridines with α-halocarbanions
作者:J. Goliński、M. Mákosza、A. Rykowski
DOI:10.1016/s0040-4039(00)88157-5
日期:1983.1
Quinoxalines and 1,5-,1.6-,1.7- and 1.8-naphthyridines react easily with chloromethyl phenyl sulfone and N,N-dialkyl chloromethanesulfonamides in the presence of base to give tetracyclic bis-aziridines and cyclopropae-aziridine derivatives.
The carbanion of chloromethyl aryl sulfone reacts with 1-cyanonaphthalene to form a bis-annulated product whereas with 1-nitronaphthalene vicarious nucleophilicsubstitution of hydrogen takes place. This result and the bis-annulation of quinoxalines and naphthyridines which was reported earlier are rationalized in terms of the negative charge delocalization in the intermediate σ-adducts.