1. Important principle in the chemistry of heterocycles: Electrophilic reactions of compounds of the pentadienyl anion type (review)

   • R. Huisgen

   ReviewPaper Pages: 417 - 433

2. Macroheterocycles. 7. Synthesis and extraction capacity of some dibenzo-18-crown-6-derivatives

   • N. G. Luk'yanenko
   • A. V. Bogat-skii
   • M. U. Mamina

   OriginalPaper Pages: 433 - 437

3. Synthesis and IR spectra of some 2-aminobenzoxazole derivatives

   • D. Simov
   • K. Davidkov

   OriginalPaper Pages: 437 - 440

4. Preparation of 5-methyl-3H-oxazolo[4,5-b]pyridine-2-thione and its reaction with amines

   • K. Davidkov
   • D. Simov

   OriginalPaper Pages: 441 - 442

5. [3,3]-Sigmatropic rearrangement of allyl and 2-butenyl 1-naphthyl sulfides

   • R. G. Aukharieva
   • T. A. Danilova
   • E. A. Viktorova

   OriginalPaper Pages: 443 - 446

6. [3,3]-sigmatropic rearrangement of allyl 2-benzothienyl sulfide

   • A. V. Anisimov
   • V. S. Babaitsev
   • E. A. Viktorova

   OriginalPaper Pages: 447 - 450

7. Mass-spectrometric study of substituted tetrahydro-4-thiopyrones

   • A. V. Serbin
   • P. I. Zakharov
   • B. V. Unkovskii

   OriginalPaper Pages: 450 - 457

8. Synthesis of some 4-thiazolidone derivatives from 4-(cyclo-3-alkenyl)thiosemicarbazones

   • I. V. Smolanka
   • N. P. Man'o
   • T. A. Krasnitskaya

   OriginalPaper Pages: 457 - 458

9. Mass-spectrometric behavior of condensed 1,3-azines with oxo, thioxo, or imino functions in the 4 position 1. 2,3-dihydro-4H-1,3-benzothiazine-2,4-dithione and its mono- or dioxo isologs

   • R. Herzschuh
   • S. Leistner
   • H. Wagner

   OriginalPaper Pages: 459 - 462

10. Investigation of nitrogen- and sulfur-containing heterocycles. 39. Reactions of 2-mercapto-3-ureido- and 2-mercapto-3-aminopyridines with β-halo carbonyl compounds. Synthesis of 6-oxo derivatives of pyrido[2,3-b][1,5]thiazepines

    • N. I. Traven'
    • T. S. Safonova

    OriginalPaper Pages: 463 - 468

11. Reaction of bis (2-oxocyclohexyl)methane with hydrogen selenide

    • A. F. Blinokhvatov
    • O. V. Markovtseva
    • V. G. Kharchenko

    OriginalPaper Pages: 469 - 471

12. Reactions of 2,2-dimethyl-3-phenylazirine with chlorides of unsaturated and amino-substituted acids

    • A. V. Eremeev
    • R. S. Él'kinson
    • V. A. Imuns

    OriginalPaper Pages: 471 - 473

13. Pyrroloindoles. 4. Spatial isomerism of 3,8-diformyl-1H, 6H-pyrrolo[2,3-e]indole dioximes

    • L. N. Kurkovskaya
    • N. L. Targamadze
    • N. N. Suvorov

    OriginalPaper Pages: 474 - 476

14. Reaction of vinylogs of a Fischer base with salicylaldehydes

    • Yu. M. Chunaev
    • N. M. Przhiyalgovskaya
    • M. A. Gal'bershtam

    OriginalPaper Pages: 476 - 479

15. Pyrido[2,3-c]furoxan as a probable intermediate in the reaction of 2-nitro-3-azidopyridine with amines

    • S. K. Kotovskaya
    • G. A. Mokrushina
    • M. V. Polyakova

    OriginalPaper Pages: 480 - 483

16. Calculation of the electronic spectrum within the CNDO/S (complete neglect of differential overlap/S) approximation and character of the long-wave absorption band of 2-N-pyridinia-1,3-indandione betaine

    • V. É. Kampar
    • Z. P. Bruvers
    • O. Ya. Neiland

    OriginalPaper Pages: 483 - 486

17. Conformational equilibrium of N-acyl-1-methyl-1,2,3,4-tetrahydroisoquinolines

    • V. M. Potapov
    • V. M. Dem'yanovich
    • Z. I. Bkhatti

    OriginalPaper Pages: 486 - 489

18. Synthesis and three-dimensional structure of 2-arylidene-3-oxoquinuclidine oximes

    • T. Ya. Filipenko
    • O. I. Gorbyleva
    • L. N. Yakhontov

    OriginalPaper Pages: 490 - 497

19. Effect of the position of the asymmetric center on the chiral-optical properties of seven-membered benzolactams

    • V. M. Potapov
    • V. M. Dem'yanovich
    • O. E. Vendrova

    OriginalPaper Pages: 498 - 501

20. Structures of the products of condensation of phthalazone hydrazones with mesityl oxide

    • N. N. Bystrykh
    • B. I. Buzykin
    • Yu. P. Kitaev

    OriginalPaper Pages: 501 - 506

21. s-Triazine derivatives. 4. Some peculiarities of the reactions of dicarbethoxymethylenetriazine derivatives

    • G. M. Vakhatova
    • O. S. Anisimova
    • L. N. Yakhontov

    OriginalPaper Pages: 507 - 510

22. Synthesis of polynuclear uncondensed tri- and tetrazoles

    • L. I. Vereshchagin
    • A. V. Maksikova
    • G. V. Sakovich

    OriginalPaper Pages: 510 - 515

23. Tetrazole derivatives. 25. Investigation of the synthesis of 1-(5-tetrazolyl)-3,5-diphenylleucoverdazyl. Structure and some properties of the accompanying product — 1,3,7,9-tetraphenyl-5-oxo-5H-1,2,4-triazolo[3′,4′:5,1]imidazo[4,3-c] -1,2,4-triazole

    • V. P. Shchipanov
    • N. A. Klyuev

    OriginalPaper Pages: 516 - 522