1. Interconversions of some nitrogen-containing heterocyclic systems (review)

   • C. W. Rees
   • R. C. Storr

   ReviewPaper Pages: 629 - 639

2. Polarographic investigation of the tautomeric transformations of β-formylacrylic acid and of the hydrolysis of its ethyl pseudoester. I

   • I. A. Kuzovnikova
   • L. A. Badovskaya
   • V. G. Kul'nevich

   OriginalPaper Pages: 640 - 644

3. Vinylpyrylation of aromatic compounds

   • V. V. Mezheritskii
   • A. L. Vasserman
   • G. N. Dorofeenko

   OriginalPaper Pages: 645 - 646

4. Reactions of 1,5-diketones

   • V. I. Vysotskii
   • N. V. Vershinina
   • M. N. Tilichenko

   OriginalPaper Pages: 647 - 649

5. Spiropyrans of the phenanthridine series

   • É. R. Zakhs
   • V. P. Martynova
   • L. S. Éfros

   OriginalPaper Pages: 650 - 653

6. Charge migration in the molecular ions of isoxazole derivatives

   • K. K. Zhigulev
   • S. D. Sokolov
   • R. A. Khmel'nitskii

   OriginalPaper Pages: 654 - 657

7. 2-Aryl-4H-3,1-benzoxazin-4-ones alcoholysis

   • B. M. Bolotin
   • N. I. Kunavin
   • R. U. Safina

   OriginalPaper Pages: 658 - 661

8. Synthesis of substituted 2-amino-4H-1,3-oxazines

   • L. A. Ignatova
   • A. E. Gekhman
   • B. V. Unkovskil

   OriginalPaper Pages: 662 - 665

9. UV spectra of some derivatives of 5,10-dihydrophenarsazine and 5,10-dihydrophenoxarsine

   • R. R. Shagidullin
   • A. V. Chernova
   • G. R. Gavrilova

   OriginalPaper Pages: 666 - 667

10. Reactions of trichloromethyldialkylamines with 2-methylbenzothiazole, 2-methylbenzoxazole, and their salts

    • L. A. Lazukina
    • V. P. Kukhar'

    OriginalPaper Pages: 668 - 670

11. Research in the benzazole and naphthazole series

    • N. N. Gulemina
    • L. F. Lipatova
    • N. P. Bednyagina

    OriginalPaper Pages: 671 - 673

12. Mass spectra of derivatives of imidazo[2,1-b] thiazole and thiazolo[3,2-a]benzimidazole

    • O. S. Anisimova
    • Yu. N. Sheinker
    • A. N. Krasovskii

    OriginalPaper Pages: 674 - 678

13. Synthesis and properties of 1,2-dihydropyridazino[4,5-b]indole II

    • M. I. Vlasova
    • N. A. Kogan

    OriginalPaper Pages: 679 - 682

14. Synthesis of substituted indolizines from 1-phenacyl-5-methyl-4-phenyl-2-phenacylidene-1,2-dihydropyridine

    • N. S. Prostakov
    • O. B. Baktibaev

    OriginalPaper Pages: 683 - 686

15. Nucleophilic substitution in 2-nitro-3-halopyridines

    • Yu. A. Azev
    • G. A. Mokrushina
    • I. Ya. Postovskii

    OriginalPaper Pages: 687 - 690

16. Synthesis of methyl-substituted benzofuro-, benzothieno-, and benzoselenopheno[2,3-b] pyridines

    • P. I. Abramenko
    • V. G. Zhiryakov
    • T. K. Ponomareva

    OriginalPaper Pages: 691 - 692

17. Investigation of nitrogen- and sulfur-containing heterocycles

    • L. G. Levkovskaya
    • V. V. Makeeva
    • T. S. Safonova

    OriginalPaper Pages: 693 - 695

18. Optical and photochemical properties of N-benzalaminophenylpyridinium perchlorates

    • Yu. P. Andreichikov
    • M. I. Knyazhanskii
    • G. N. Dorofeenko

    OriginalPaper Pages: 696 - 698

19. Nitro derivatives of 3-hydroxyquinoline

    • K. M. Dyumaev
    • E. P. Popova
    • L. D. Smirnov

    OriginalPaper Pages: 699 - 701

20. Hydroacridines and related compounds

    • A. N. Saverchenko
    • V. A. Kaminskii
    • M. N. Tilichenko

    OriginalPaper Pages: 702 - 704

21. π-electron structure, reactivity, and absorption spectra of anthrapyridone

    • B. E. Zaitsev
    • T. A. Mikhailova

    OriginalPaper Pages: 705 - 709

22. Proof of the structure of 1-tosyl-5-(2′-nitrovinyl)imidazole

    • A. M. Rozhkov
    • A. I. Rezvukhin
    • V. P. Mamaev

    OriginalPaper Pages: 710 - 711

23. Synthesis and properties of azoles and their derivatives

    • G. A. Shvekhgeimer
    • G. A. Mikheichev

    OriginalPaper Pages: 712 - 714

24. Pyrimidines

    • M. A. Mikhaleva
    • L. N. Il'chenko
    • V. P. Mamaev

    OriginalPaper Pages: 715 - 719

25. Paramagnetic ring current in the diazepine ring of the 1H-benzo-1,5-diazepinium monocation

    • K. F. Turchin

    OriginalPaper Pages: 720 - 723

26. Synthesis of nitro-substituted 4-methyl-2,3-dihydro- and 2,3,4,5-tetrahydro-1H-1,5-benzo-2-diazepinones

    • B. A. Puodzhyunaite
    • Z. A. Talaikite

    OriginalPaper Pages: 724 - 727

27. 1,4-Benzodiazepines and their cyclic homologs and analogs

    • A. V. Bogat-skii
    • S. A. Andronati
    • S. G. Soboleva

    OriginalPaper Pages: 728 - 731

28. New heterocyclic sym-triazolopyrimidinium systems — Quinoline, pyridazine, and phthalazine derivatives

    • G. M. Golubushina
    • O. G. Ponomarenko
    • V. A. Chuiguk

    OriginalPaper Pages: 732 - 734

29. Reaction of 1-amino-, 2-amino-, and 1,2-diaminoimidazoles with β-diketones

    • G. M. Golubushina
    • G. N. Poshtaruk
    • V. A. Chuiguk

    OriginalPaper Pages: 735 - 739

30. Acylation of some substituted 1,2,4-triazole-3-thiones

    • M. M. Tsitsika
    • S. M. Khripak
    • I. V. Smolanka

    OriginalPaper Pages: 740 - 742

31. Synthesis of trimethylethylene sulfide

    • Zh. Zh. Zhumabaev
    • A. D. Aliev
    • B. A. Krentsel'

    Letters to the Editor Pages: 743 - 743

32. Direct replacement of a nitro group by a halogen in a number of imidazo[4,5-c]pyridine derivatives

    • Yu. M. Yutilov
    • I. A. Svertilova

    Letters to the Editor Pages: 744 - 745

33. Anthraquinoneisoimidazoles

    • M. V. Gorelik
    • Khan Ir Gvon

    Letters to the Editor Pages: 746 - 747

34. Synthesis of isoflavones that have hypocholesterinemic activity

    • G. N. Dorofeenko
    • A. L. Shinkarenko
    • V. V. Mezheritskii

    Letters to the Editor Pages: 748 - 748

35. Synthesis of the 1-(5-tetrazolyl)-3,5-diphenylverdazyl radical

    • V. P. Shchipanov
    • A. A. Skachilova

    Letters to the Editor Pages: 749 - 749

36. 5-Fluorosulfonylcytosine

    • L. S. German
    • V. R. Polishchuk
    • S. Ya. Mel'nik

    Letters to the Editor Pages: 750 - 750

37. 5-Polyfluoroalkyluracils

    • L. S. German
    • V. R. Polishchuk
    • L. M. Kirshchenya

    Letters to the Editor Pages: 751 - 751

38. Elimination of bromine during the reaction of 2,8-dibromo-7-ethoxy-3-phenoxazinone with morpholine

    • I. Ya. Postovskii
    • G. B. Afanas'eva
    • T. S. Viktorova

    Letters to the Editor Pages: 752 - 753