Document Details

Document Type : Article In Journal 
Document Title :
NUCLEAR-MAGNETIC-RESONANCE SPECTROSCOPY AND THE STRUCTURES OF THE REGIOISOMERIC PRODUCTS OF THE CYCLOADDITION OF C-ETHOXYCARBONYL-N-ARYLNITRILIMINES TO ALPHA,BETA-UNSATURATED KETONES
NUCLEAR-MAGNETIC-RESONANCE SPECTROSCOPY AND THE STRUCTURES OF THE REGIOISOMERIC PRODUCTS OF THE CYCLOADDITION OF C-ETHOXYCARBONYL-N-ARYLNITRILIMINES TO ALPHA,BETA-UNSATURATED KETONES
 
Document Language : Arabic 
Abstract : H-1 NMR chemical shifts were used to assign the structures of the regioisomeric products obtained from the reactions of C-ethoxycarbonyl-N-arylnitrilimines 2A-E to alpha,beta-unsaturated ketones 3a-j. The assignments were based on the large observed difference between chemical shifts of the H-4 and H-5 of the 2-pyrazoline ring residue. Values of 1.29 +/- 0.06 and 0.34 +/- 0.03 ppm were found for DELTA-delta-4,5 for the 5-aroyl- and 4-aroyl-2-pyrazoline regioisomers 4 and 5, respectively. The regioselectivity in the studied cycloaddition reactions is interpreted in terms of FMO method. 
Journal Name : SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 
Volume : 48 
Issue Number : 8 
Publishing Year : 1992 AH  
Added Date : Saturday, June 14, 2008 

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Researcher Name (Arabic)Researcher Name (English)Researcher TypeDr GradeEmail
صالح بن طاهر أزمرلي Researcher  

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