Reduction with sodium tetrahydridoborate of Schiff bases derived from 3-aryl(heteryl)pyrazole-4-carbaldehydes and benzylamines gave N-benzyl-N-[3-aryl(heteryl)-4-pyrazolylmethylene]amines which were acylated with benzoyl chloride and succinic and maleic anhydrides to obtain the corresponding amides. Treatment of the title compounds with phenyl isothiocyanate afforded substituted thioureas. * For communication XIII, see [1].We previously described [24] a series of new functionalized 3-aryl(heteryl)pyrazole derivatives in which functional substituent is linked to the C 4 atom of the pyrazole ring through a CH 2 or CH unit. The present communication reports on the synthesis and some general transformations of N-benzyl-N-(4-pyrazolyl)methanamines. Except for 3,5-diaminomethyl-1-phenylpyrazole [5], there are no published data on such compounds.

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Pyrazole derivatives R 0180 4-Functionally Substituted 3-Heterylpyrazoles. Part 14. N-Benzyl-N-[3-aryl(heteryl)-4-pyrazolylmethylene]amines and Their Derivatives. -The title compounds (II) are obtained in good yields by reduction of the corresponding Schiff bases (I) with NaBH4. The reactions of the amines (II) with Ph-NCS, Bz-Cl, and anhydrides are used for the preparation of their N-substituted derivatives (IV), (VI), (VIII), and (X). -(BRATENKO, M. K.; PANIMARCHUK, O. I.; CHORNOUS, V. A.; VOVK, M. V.; Russ. J. Org. Chem. 41 (2005) 1, 98-102; Bukovina State Med. Acad., Chernovtsy 58000, Ukraine; Eng.) -R. Staver 36-103

Pyrazole derivatives R 01804-Functionally-Substituted 3-Heterylpyrazoles. Part 15. 3-Aryl(heteryl)-1-phenyl-4-pyrazolylmethylamines and Heterocumulenes Obtained Therefrom. -Pyrazolylmethylamines (IV) are prepared in good yields by a convenient two-step procedure via Gabriel reaction followed by hydrazinolysis of the phthalimides (III). The reaction of amines (IV) with triphosgene leads to the isocyanates (VI), while the reaction with CS 2 affords isothiocyanates (VIII) in a pure state. -(BRATENKO, M. K.; PANIMARCHUK, O. I.; MEL'NICHENKO, N. V.; VOVK, M. V.; Russ. J. Org. Chem. 41 (2005) 2, 238-242; Bukovina State Med. Acad., Chernovtsy 58000, Ukraine; Eng.) -R. Staver 39-113