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        1,3 are an asymmetric line from copper with a width of H =   the  cyclization  process  was  established  and  a  probable
        165 Oe and with a q-factor of spectral splitting (qeff = 2.107).   mechanism of this reaction was proposed.
        The number of unpaired electrons is 2 -1018 spin / g. The
        calculations  were  carried  out  according  to  the  method   References
        proposed by Blumenfeld et al. [10].                    [1]    Yusupov   D.,   Akhmerov   K.   M.   "Catalytic
                                                                      heterocyclization of acetylenic compounds" // in
        In  all  cases,  when  electron  paramagnetic  resonance      the book, Tashkent, "Fan" 1985, pp. 1-180.
        influenced the formation of a π-complex of copper with long,
                                                               [2]    Flid  R.  M.  “Kinetics  and  mechanism  of  catalytic
        changes were observed in the IR spectra in comparison with
                                                                      transformations of acetylene. On some questions of
        the spectra of the initial diarylbutadiines.
                                                                      the reaction mechanism of the addition of various
                                                                      molecules  to  acetylene  "//  J.  Organ.  Chemistry,
        In the IR spectra of the copper complex 1- (π-methylphenyl)
                                                                      1958. v. 32, No. 10, pp. 2339-2346.
        -4- (π-chlorofinyl) -butadiene-1,3, the absorption band in the
        region  of  2148  cm-1,  characteristic  of  the  -С≡С  -  bond,   [3]   Turabzhanov  S.  M.  "Creation  of  low-waste
        disappears and new absorption bands appear in the area of     technology for the production of pyridines, acetone
        3100-3165 (wide) and 3440-3468 cm.                            and esters based on acytelene and its derivatives"
                                                                      // Diss. for a job. d. t. n. - Tashkent, 1999, p. 192
        In addition to analytical methods, the amount of copper in   [4]
        the complex was also determined using the 64Cu-labeled        Safarov M. Zh. "Catalytic synthesis of pyrrole and its
                                                                      derivatives"  //  J.  Kimyo  va  kimeviy  technology,
        activation method. It is likely that with an increase in the
                                                                      2005, no. 1, pp. 22-23.
        temperature of the reaction medium, the stability of the π-
        complex  decreases,  and  a  favorable  transition  state  is   [5]   Turabdzhanov S. M., Safarov M. Zh. "Synthesis of
        created for the attack of a nucleophile (R-NH2, NH3) along    pyrroles  from  ethanolamines  and  ketone"  //  J.
        one of the triple bonds.                                      Khimich. industry today, 2005, no. 6, pp. 34-35
                                                               [6]
        Subsequently, the catalyst is detached from the diacetylene   Trofimov  B.  A.,  Mikhaleva  A.  I.  “Reactions  of
                                                                      ketoximes with acetylene. A new general method
        molecule with the simultaneous nucleophilic addition of the   for  the  synthesis  of  pyrroles  "//  Chemistry  of
        second primary amine molecule to the triple bond with the
        formation of an unstable diaminodiene compound, which         heterocyclic compounds, 1980, No. 10, pp. 1299-
                                                                      1312.
        under the influence of temperature and catalyst undergoes
        cyclodeamination with the formation of pyrrole derivatives.   [7]   Trofimov  B.  A.,  Sobenina  L.  N.,  Mikhaleva  A.  I.
                                                                      "Advances in the chemistry of pyrroles" // results of
        Consequently, the formation of the pyrrole ring proceeds      science and technology. Organic chemistry, Moscow,
        through  the  formation  of  the  diarylbutadiene  copper     1987, v. P. 78.
        complex.  The  transition  to  the  active  state  of  the  diine
        molecule  occurs  through  the  decomposition  of  the  π-  [8]   Inakov  T.  K.,  Madikhanov  N.,  Makhsumov  A.  G.
        complex  under  the  reaction  conditions.  Separately  taken   "Synthesis of pyrrole gamologists" // Uzbek. Chem.,
                                                                      1976, No. 1, pp. 65-66.
        copper complexes of diarylbutadiene (without the addition
        of primary amine) are almost completely distributed with   [9]   Yusupov D., Kuchkarov A. B, Akhmerov K. M. "On
        increasing  temperature  of  the  reaction  medium.           the  mechanism  of  formation  of  pyrrole  from
        Diarylbutadiene-1, 3 completely goes into organic solvent,    acetylene and ammonia" // Mat. III-scientific and
        and the catalyst precipitates.                                technical. And theorizes. conf. TashPI, Navoi, 1974,
                                                                      pp. 149-152
        Thus, as a result of studying the cycloaddition reaction of
                                                              [10]    Gassauer A. In: Die chemie der Pyrrole. // Berlin -
        primary amines to dialcyylenes, the influence of the nature
                                                                      Heidelberg - New York, 1974, s. 433.
        and  number  of  substituents  of  the  phenyl  radical  of  the
        phenyl group, temperature, solvents, duration of the process,   [11]   Blumenfeld A. A., Boevodsky V. V., Semenov A. E.
        as well as the amount and nature of the copper catalyst on    "Single  symmetric  dynes  in  the  EPR  spectra"  //
                                                                      Novosibirsk, 1962, pp. 85-87.

























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