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In order to compare organoaluminum compounds with other organometallic types, it was necessary to investigate the reaction of some typical organo-aluminum compounds with organic compounds having simple functional groups. Earlier studies with organo-a!uminum compounds 1 ), particularly the mixed types containing ha!a,acn, indicated marked condensation reactions. W e have observed that the simple organo-aluminum compounds actually undergo some of the typical reactions of Grignard reagents. However, the organo-aluminum compounds react a t 3 decidedly lesser rate than R M g X compounds, and the yields of products are less satisfactory.T h e significant differences in reactivities of organo-aluminum and Grignard reagents might warrant the expectation of effecting preferential reactions with organo-aluminum compounds. T h e reaction with nitriles. however. to give the expected ketones signifies that most of the simple functional groups in organic compounds will be found to react with organo-aluminum compounds after the manner of R M g X compounds. This observation is based on a study by Entemann and Johnson 2 ) who, from a comparison of the relative reactivities of some organic compounds with phenylmagnesium bromide, concluded that the decreasing activities of some functional groups was as folloxvs:

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