CARBODIIMIDE INSERTION INTO ORGANOALUMINUM COMPOUNDS AND THERMAL REARRANGEMENT OF THE PRODUCTS

A series of carbodiimide insertion products were prepared using variou s aluminum reagents (viz., AlR3 (R = Me, Et), AlX2Y (X = Cl, R; Y = Cl , NR2')) and 1,3-diisopropyl- and 1,3-di-tert-butylcarbodiimides in va rious stoichiometric ratios. The resulting products 1-20 were isolated either as colorless liquids or as solids. These compounds were charac terized by H-1 NMR, C-13 NMR, IR, and mass spectral data. Elemental an alysis data for some of the representative compounds were obtained. Th e crystal structures of two of the compounds (compounds 8 '' and 10) w ere determined by single-crystal X-ray diffraction. The competitive mi gration of the alkyl, chloro, or amino group attached to the aluminum atom onto the carbon of the carbodiimide is also reported.