1. Chemistry of Δ^β,γ-butenolides (review)

   • A. A. Avetisyan
   • G. G. Tokmadzhyan

   ReviewPaper Pages: 595 - 610

2. Five-membered 2,3-dioxoheterocycles 3. The reaction of 5-aryl-2,3-dihydrofuran-2,3-diones with aliphatic and aromatic nitriles

   • Yu. S. Andreichikov
   • D. D. Nekrasov
   • A. Yu. Konovalov

   OriginalPaper Pages: 610 - 613

3. Structures and photo- and thermochromic properties of spiropyrans of the 2-oxaindan series with polycondensed chromene fragments

   • S. M. Aldoshin
   • V. A. Lokshin
   • V. I. Minkin

   OriginalPaper Pages: 614 - 624

4. Synthesis of 2-carbethoxybenzofuran derivatives

   • A. Prewysz-Kwinto

   OriginalPaper Pages: 624 - 627

5. Pyrilocyanines. 24. Symmetrical tetra-tert-butyl substituted pyrilo-2-cyanines

   • V. V. Kurdyukov
   • A. A. Ishchenko
   • A. I. Tolmachev

   OriginalPaper Pages: 628 - 633

6. Synthesis and recyclization of 4-chloromethylflavylium and 4-chloromethylbenzothiapyrilium salts

   • S. V. Tolkunov
   • V. I. Dulenko

   OriginalPaper Pages: 633 - 635

7. Preparation of substituted 4-(3-methyl-3-hydroxy-1-butynyl)-2-ethoxy-1,3-dioxolanes

   • I. Yu. Kibina
   • Sh. M. Musantaeva
   • A. V. Shchelkunov

   OriginalPaper Pages: 636 - 637

8. gem-Dialkoxylation of 2-acetylthiophenes and 2-acetylfurans

   • G. N. Gordeeva
   • S. M. Kalashnikov
   • U. B. Imashev

   OriginalPaper Pages: 638 - 641

9. Mass-spectrometric behavior of N-substituted 2-methyl-3-acetyl pyrroles

   • E. A. Runova
   • N. M. Tanchuk
   • é. A. Karakhanov

   OriginalPaper Pages: 641 - 643

10. New synthesis of 5,6-benzindole

    • L. B. Shagalov
    • G. M. Ostapchuk
    • N. N. Suvorov

    OriginalPaper Pages: 644 - 645

11. Synthesis of tetraphenylporphines with active groups in the phenyl rings. 4. Functionally substituted monohydroxy derivatives of tetraphenylporphine

    • S. A. Syrbu
    • A. S. Semeikin
    • B. D. Berezin

    OriginalPaper Pages: 645 - 650

12. Synthesis of new pyrazole and isoxazole derivatives based on products of condensation of β-dicarbonyl compounds with 1,2,3-trihalopropanes

    • Sh. T. Akhmedov
    • N. S. Sadykhov
    • N. S. Zefirov

    OriginalPaper Pages: 651 - 655

13. Vibrational spectra, structures, and conformations of conjugated azomethines — 3-imidazoline derivatives

    • M. M. Mitasov
    • Yu. V. Gatilov
    • L. B. Volodarskii

    OriginalPaper Pages: 655 - 660

14. Formation of 1,4- and 1,5-regioisomers of triazolines in reactions of 2-ethoxyethyl azide with monosubstituted ethylenes

    • G. A. Lanovaya
    • V. F. Mishchenko
    • E. D. Korniets

    OriginalPaper Pages: 660 - 664

15. Nucleophilic addition to 1,2,2,6,6-pentamethyl-3,5-dimethylene-4-piperidone

    • A. M. Belostotskii
    • A. B. Shapiro

    OriginalPaper Pages: 665 - 669

16. Mass spectroscopic study of 2,5-dimethyl-4-benzoyl- and 2,5-dimethyl-4-benzylpyridine derivatives

    • P. I. Zakharov
    • A. N. Gusarov
    • N. S. Prostakov

    OriginalPaper Pages: 670 - 675

17. Quaternization of pyridines with haloadamantanes

    • V. A. Sokolenko
    • N. M. Svirskaya

    OriginalPaper Pages: 675 - 677

18. Synthesis and spectral luminescent properties of certain pyridine and quinoline analogs of isomeric distyrylnaphthalenes and styryl- and distyrylanthracenes

    • E. M. Vernigor
    • M. V. Koz'menko
    • V. K. Shalaev

    OriginalPaper Pages: 677 - 680

19. Nature of the fluorescent states of quinoline analogs of styryl and distyrylanthracene

    • E. M. Vernigor
    • M. V. Koz'menko
    • V. K. Shalaev

    OriginalPaper Pages: 681 - 685

20. 3-Aryl-2-benzyl -1,2-dihydroquinoxalines

    • V. D. Orlov
    • B. Insuasti
    • N. N. Kolos

    OriginalPaper Pages: 685 - 687

21. Synthesis of azotriazines

    • L. M. Mironovich
    • V. K. Promonenkov
    • S. E. Bogushevich

    OriginalPaper Pages: 687 - 689

22. Purines and pyrimidines and condensed systems based on them. 2. Synthesis of 1-methyl-9-aminoxanthine and 9-aminotheophylline

    • V. V. Kuz'menko
    • T. A. Kuz'menko
    • A. V. Gulevskaya

    OriginalPaper Pages: 690 - 697

23. Heterocyclization of compounds containing diazo and cyano groups. 4. Reactions of 2-diazo-2-cyanoacetic acid amides with P₄S₁₀ and the lawesson reagent. Synthesis and recyclization of 5-amino-1,2,3-thiadiazole-4-carbothioamides

    • V. A. Bakulev
    • E. F. Dankova
    • A. T. Lebedev

    OriginalPaper Pages: 698 - 701

24. Oxidation of halohydroxybenzo-2,1,3-thiadiazoles with nitric acid

    • I. A. Belen'kaya
    • G. P. Krokhina
    • S. A. Andronati

    OriginalPaper Pages: 702 - 704

25. New synthesis of diaminodinitrodibenzo-18-crown-6 derivatives

    • é. I. Ivanov
    • A. A. Polishchuk
    • R. Yu. Ivanova

    Letters to the Editor Pages: 705 - 705

26. Cross cyclization of tertiary cyanoacetylenic alcohols with sulfide ion

    • B. A. Trofimov
    • Yu. M. Skvortsov
    • O. M. Fartysheva

    Letters to the Editor Pages: 706 - 706

27. Formation of 1,2-diselenol-3-one in the copyrolysis of propargyl alcohol and dimethyl selenide

    • M. G. Voronkov
    • é. N. Deryagina
    • L. V. Klyba

    Letters to the Editor Pages: 707 - 707

28. 1,3-Dipolar cycloaddition of cycloimmonium ylids that form from pyridines and dichlorocarbene

    • A. F. Khlebnikov
    • R. R. Kostikov

    Letters to the Editor Pages: 708 - 709

29. Pyrimidine ring transformations to 6-nitroazolo[1,5-a]pyrimidines — A one-step synthesis of azolylamino derivatives of nitropyridine

    • V. L. Rusinov
    • T. L. Pilicheva
    • O. N. Chupakhin

    Letters to the Editor Pages: 709 - 709