Aziridinyl ketones and their cyclic anils. 9. Substituted 1,3-diazabicyclo[3.1.0]hex-3-enes

Aryl-substituted 1,3-diazabicyclo[3.1.0]hex-3-enes were obtained by the reaction of ,-dibromodihydrochalcones with ammonia and formaldehyde (or acetone). Their structures were confirmed by spectral methods and x-ray diffraction analysis.See [1] for Communication 8.Translated from Khimiya Geterotsiklicheskikh Soedinenii, No. 8, pp. 1064–1070, August, 1989.     

Synthesis of peroxides from β,δ-triketones under heterogeneous conditions

Heterogeneous reactions of β,δ-triketones with ethereal hydrogen peroxide in nonpolar solvents, catalyzed by phosphomolybdic acid, afforded mixtures of stereoisomeric ozonides, tricyclic monoperoxides, and bridged tetraoxanes. The trioxolane ring is formed by the carbonyl groups located in the δ-position with respect to each other.     

Synthesis and study of new 2-aryl-1-(4-nitrophenyl)-1,1a-dihydroazireno[1,2-a]quinoxaline derivatives

New derivatives of photochromic 2-aryl-1-(4-nitrophenyl)-1,1a-dihydroazireno[1,2-a]quinoxalines were synthesized by condensation of 4-methyl-and 4,5-dimethyl-1,2-phenylenediamine with 1,3-diaryl-2,3-dibromopropan-1-ones. The reactions of 4-methyl-1,2-phenylenediamine produce mixtures of regioisomers. The chemical properties of the reaction products were studied. The structure of one of the latter was established by X-ray diffraction. Published in Russian in Izvestiya Akademii Nauk. Seriya Khimicheskaya, No. 2, pp. 350–356, February, 2006.     

Aziridinyl ketones and their cyclic anils. 6. Proton-acceptor capacities of aziridinyl ketones

The proton-acceptor capacities of a number of cis- and trans-aziridinyl ketones were estimated by IR spectrometry from the shifts of the OH bands of phenol, p-bromophenol, and trichloroacetic acid.It is shown that the cis isomers interact with all of the proton donors, whereas the trans isomers interact only in CCl₃COOH.The latter is due to the fact that a strong intramolecular hydrogen bond exists in the trans-NH-aziridinyl ketones, whereas considerable steric hindrance to complexing develops in the trans-N-alkylaziridinyl ketones.It was established that the formation of complexes takes place at the carbonyl group of the aziridinyl ketones.See [1] for Communication 5.Translated from Khimiya Geterotsiklicheskikh Soedinenii, No. 12, pp. 1641–1644, December, 1981.     

On Semiperfect Semidistributive Rings

Mathematical Notes -     

Bonds for a functional on a class of functions with positive real parts

We establish sharp upper and lower bounds for the functionalJ (p)- Re{p (z)-zp'(z)/p(z), 1. where ¦z¦=r is fixed, 0 <r <1, p(z).P_n (A, B), –1 B < a 1, a certain class of regular functions in the disk with values in the right halfplane.Translated from Ukrainskii Matematicheskii Zhurnal, Vol. 42, No. 5, pp. 686–689, May, 1990.     

Radii of starlikeness of certain classes of regular functions

Translated from Ukrainskii Matematicheskii Zhurnal, Vol. 41, No. 5, pp. 695–698, May, 1989.