Carbenoid intermediates in the synthesis of mesoionic anhydro-4-hydroxythiazolium hydroxides
作者:Kevin T. Potts、Peter Murphy
DOI:10.1039/c39840001348
日期:——
α-(Tosylhydrazono)phenylacetyl chloride and N-Monosubstituted thioamides in dry, non-protic solvents and in the presence of Et3N give representatives of the title mesoionic ring system in good to excellent yields; carbene or carbenoid type intermediates are most likely involved in these regiospecific cyclizations.