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Synthesis of some new heterocyclic compounds from enaminonitriles / Emad Samir Gergis Shehata ; Supervised Nadia Hanafy Metwally Mohamed , Sayed Abdel Tawabe Ali

By: Contributor(s): Material type: TextTextLanguage: English Publication details: Cairo : Emad Samir Gergis Shehata , 2014Description: 136 P. ; 25cmOther title:
  • تشييد بعض المركبات الغير متجانسة الحلقة الجديدة من اينامينونيتريلات [Added title page title]
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  • Issued also as CD
Dissertation note: Thesis (M.Sc.) - Cairo University - Faculty of Science - Department of Organic Chemistry Summary: The condensation of 2-cyanomethylpyrazolo[1,5-a]pyrimidines 3a,b with various aromatic aldehydes afforded the corresponding arylidene of substi- tuted pyrazolo[1,5-a]pyrimidines 5a-l. Coupling of compounds 3a,b with aryldiazonium salts led to formation of 2-arylhydrazono derivatives11a-j. Reaction of the latter compounds with malononitrile led to formation of polyfused heterocyclic compounds 15a-j.The reaction of 3a,b with phenyl isothiocyanate, followed by addition of Ü-haloketonesor Ü-haloesters afforded the polyheterocyclic compounds based-pyrazolo[1,5-a]pyrimidine derivatives. Also, the enamines of compounds 3a,b react with hydrazine derivatives to give the amniopyrazolo[4'',3'':5',6']pyrido[4',3':3,4]pyrazolo- [1,5-a]pyrimidine 28a-d. The structures of all the newly synthesized products were established by their elemental, spectral data and plausible mechanism has been postulated to account for their formation
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Item type Current library Home library Call number Copy number Status Date due Barcode
Thesis Thesis قاعة الرسائل الجامعية - الدور الاول المكتبة المركزبة الجديدة - جامعة القاهرة Cai01.12.10.M.Sc.2014.Em.S (Browse shelf(Opens below)) Not for loan 01010110065834000
CD - Rom CD - Rom مخـــزن الرســائل الجـــامعية - البدروم المكتبة المركزبة الجديدة - جامعة القاهرة Cai01.12.10.M.Sc.2014.Em.S (Browse shelf(Opens below)) 65834.CD Not for loan 01020110065834000

Thesis (M.Sc.) - Cairo University - Faculty of Science - Department of Organic Chemistry

The condensation of 2-cyanomethylpyrazolo[1,5-a]pyrimidines 3a,b with various aromatic aldehydes afforded the corresponding arylidene of substi- tuted pyrazolo[1,5-a]pyrimidines 5a-l. Coupling of compounds 3a,b with aryldiazonium salts led to formation of 2-arylhydrazono derivatives11a-j. Reaction of the latter compounds with malononitrile led to formation of polyfused heterocyclic compounds 15a-j.The reaction of 3a,b with phenyl isothiocyanate, followed by addition of Ü-haloketonesor Ü-haloesters afforded the polyheterocyclic compounds based-pyrazolo[1,5-a]pyrimidine derivatives. Also, the enamines of compounds 3a,b react with hydrazine derivatives to give the amniopyrazolo[4'',3'':5',6']pyrido[4',3':3,4]pyrazolo- [1,5-a]pyrimidine 28a-d. The structures of all the newly synthesized products were established by their elemental, spectral data and plausible mechanism has been postulated to account for their formation

Issued also as CD

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