Document Details

Document Type : Article In Journal 
Document Title :
Syntheses of dipyrazole ketones. The regioselectivity of the cycloadducts products and simple method for syntheses of pyrazolopyrazoline derivatives
تشييد الـ dipyrazole ketones. دراسة الاختيار الموضعية ونواتج الإضافة لمشتقات pyrazolopyrazoline
 
Subject : Organic Chemistry 
Document Language : English 
Abstract : The cycloaddition of C-ethoxycarbonyl-N–arylnitrilimine 6 with ,ß–unsaturated ketone5 gave predominantly the dipyrazolyl ketones 8 Cyclocondensation of 8 with hydrazine hydrate afforded the pyridazinone derivates 9 and 10. Treatment of 5 with hydrazine derivatives gave the pyrazolopyrazolines 11. Reactions 11 (R=H) with isothiocyanate derivaties leads to N-substituted thioureas 12 and 13. The structures of the cycloadducts 8, pyridazinone derivatives 9 and 10, pyrazolopyrazoline derivatives 11 and N-substituted thioureas 12 and 13 were supported by MS, NMR and IR Spectroscopic Methods. 
ISSN : 1319-6103 
Journal Name : Journal of Saudi Chemical Society 
Volume : 5 
Issue Number : 3 
Publishing Year : 1422 AH
2001 AD 
Article Type : Article 
Added Date : Sunday, June 22, 2008 

Researchers

Researcher Name (Arabic)Researcher Name (English)Researcher TypeDr GradeEmail
حسن عبدالقادر البارAlbar, Hassan AbdulkaderInvestigatorDoctoratehalbar@kau.edu.sa
عبدالله م. عسيريAsiri, ِلايعمشا M.ResearcherDoctoratehalbar@kau.edu.sa
حسن م. فيض اللهFaidallah, Hasssan M.ResearcherDoctoratehalbar@kau.edu.sa
ماجده أ. عبداللهAbdullah, Magda A.ResearcherDoctoratehalbar@kau.edu.sa

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