bath for 3 hr. The solution was then chilled and poured into 4 ml. of cold 28% ammonia water and stirred. The precipitated amide was purified by three recrystallizations from dilute ethanol and amounted to 0.75 g. (84%) of white crystals, m.p. 129.5-132°, mixture m.p. with amide derived from the benzocoumarin (II).

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noncrystalline material present, but in this case most of the the interchain distance (9.4 A) large pendant groups are sample is crystalline. In both samples the noncrystalline probably on the polymer chain." phases have the same interchain distance, suggesting that these phases are very similar. Because of the magnitude of College Park, Md.

acetate 2. The sole product was formulated as 3P,9adihydroxy-5a-lanost-7-ene (4a) on the following basis.Acetylation with pyridine and acetic anhydride under the usual conditions gave a monoacetyl derivative 4b which still contained a hydroxyl function. Very brief treatment with a trace of mineral acid converted the alcohol 4b into dihydroagnosteryl acetate (3b). The nmr spectrum of alcohol 4a showed the presence of a trisubstituted olefin. Further support for the olefin was provided by the mass spectrum, which displayed an m/e 426 fragment (IC1 -18). The foregoing wouldThe subject of the present communication is a novel synthesis of Schiff bases by intercepting in situ deoxygenated nitro derivatives by aldehydes. Thus, in the presence of a group VI11 metal catalyst (e.g., rhodium carbonyl) , the interaction of benzaldehyde and aromatic nitro compounds under a pressure of (1) For part I, see A. F. M. Iqhal, Tetrahedron Lett., 3385 (1971).

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