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The results here presented have been embodied in a dissertation for the Master's degree by Lila Sands.

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The hydroxamic acids derived from 0-and ^-benzhydrylbenzoic acids were prepared and their ease of rearrangement was studied.2. These hydroxamic acids undergo rearrangement with great difficulty, which is in marked contrast to the ease of rearrangement of triphenylacethydroxamic acid. Since they contain a radical (benzhydrylphenyl) which is isomeric with triphenylmethyl, the radical found in triphenylacethydroxamic acid, it is conclusively shown that the mass of the radical is not the factor that determines the ease of rearrangement in reactions of the Lossen-Hofmann-Curtius type. Therefore, the ease of rearrangement seems to be related in some way to the "tendency of the radical to exist as a free radical."3. 0-and ^-Benzhydrylphenyl-urea, the products obtained when these hydroxamic acids rearrange in water, were synthesized and found to be identical with the rearrangement products. ^-Benzhydrylphenyl-urethan, the rearrangement product of ^-benzhydryl-benzhydroxamic acid in alcohol, was also synthesized.4. 9-Phenyl-9-chloro-anthrone was formed when o-benzhydrylbenzoic acid was treated with thionyl chloride. In chloroform or in carbon disulfide solution, 0-benzhydrylbenzoyl chloride was formed when the acid was treated with thionyl chloride.5. Unsuccessful attempts were made to prepare diphenyl-phthalimidine.6. m-Benzhydrylbenzoic acid was prepared. Princeton, New Jersey