1,3-Dipolar Cycloaddition Reaction of Benzonitrile Oxide with 4-Arylmethylene-2,4-dihydro-2,5-disubstituted-3H-pyrazol-3-ones
Corresponding Author(s) : Daroga Singh
daroga.singh@hotmail.com
Asian Journal of Chemistry,
Vol. 20 No. 8 (2008): Vol 20 Issue 8
Abstract
In this paper, enantioselective formation of E/Z-4,5- dihydro spiro[3- phenyl-5-substituted phenyl isoxazole-4,4'- (2',4'-dihydro-2',5'-disubstituted-3'H-pyrazol-3'-ones)] is described by means of stereospecific 1,3-dipolar cycloaddition of benzonitrile oxide with 4-arylmethylene-2,4-dihydro-2,5- disubstituted-3H-pyrazol -3-ones.
Keywords
Substituted pyrazolones
Cycloaddition
Configurational isomers
Stereospecific
(1)
Singh, D.; Prakash Rai, B.; Singh, V. 1,3-Dipolar Cycloaddition Reaction of Benzonitrile Oxide With 4-Arylmethylene-2,4-Dihydro-2,5-Disubstituted-3H-Pyrazol-3-Ones. ajc 2010, 20, 6451-6456.
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