A number of dimethylphosphono-substituted diazoalkanes having the general formula RC (N2) P (0)(OMe) 2 (R= alkyl, cycloalkyl, and substituted vinyl) have been prepared by the action of aqueous base on the corre-sponding p-toluenesulfonylhydrazone precursor. Copper powder catalyzed the decomposition of these diazo compounds to give a carbenoid which then underwent intramolecular rearrangement, the course of which varied ...
