However, it is not necessary to assume the existence of tautomeric pyrroles in order to explain the formation of 2-carbethoxypyrrole, for the ethyl chlorocarbonate may condense with the hydrogen on the 2-carbon atom. Such a scheme finds support in the fact that 1- methylpyrrole does not form a Grignard reagent yet condenses with acid chlorides in the presence of an alkylmagnesium halide to yield l-methyl-2-acylpyrroles. 8 However I- ...
