BIS- AND TRIS(DIAZOMETHYL)PHOSPHANES - NEW BUILDING BLOCKS FOR THE SYNTHESIS OF PHOSPHORUS HETEROCYCLES

Article abstract of DOI:10.1016/S0040-4039(00)82483-1

The bis- and tris(diazomethyl)phosphanes 5 and 12, obtained by electrophilic diazoalkane substitution of 4 or PCl3 with lithiated 3, are starting materials for complicated, heteroatom-substituted compounds.Thus, <3+2>-cycloadditions with the phosphaalkyne 8 and subsequent <1,5>-Tms shifts give rise to the phosphanes 10 and 13 which then condense with phosphorus, arsenic, antimony, silicon, or germanium halides to furnish heterocycles of the types 9, 11, or 15 with cleavage of chlorotrimethylsilane.