- 2-Isoxazolines with an electron-acceptor substituent at C(5) in reactions with nucleophilic reagents
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Depending on the substituent at position 5 of the heterocycle, reaction of 2-isoxazolines with K-selectride, molybdenum hexacarbonyl, dimsyl sodium, and butyl lithium gave 1,3-cyclo-decomposition, aromatization of the isoxazoline ring, or reduction of the functional groups in the substituted isoxazolines.
- Koroleva,Bondar,Katok,Chekanov,Chernikhova
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- SYNTHESIS AND PROPERTIES OF AZOLES AND THEIR DERIVATIVES. PART XXVI. SUBSTITUENT EFFECT ON THE CYCLOADDITIONS OF BENZONITRILE N-OXIDES TO NITROETHENE AND 3-NITROPROPENE-1
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The kinetics of the cycloaddition reactions of R-substituted benzonitrilo N-oxides to nitroethene and 3-nitropropene-1 have been studied by quantitative IR-analysis.Substituent effect on the reaction rate is discussed in terms of the FMO theory.
- Baranski, Andrzej,Cholewka, Elzbieta
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p. 319 - 331
(2007/10/02)
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- SYNTHESIS AND PROPERTIES OF AZOLS AND THEIR DERIVATIVES. PART VI. CYCLOADDITION REACTIONS OF NITROETHYLENE WITH AROMATIC NITRILE N-OXIDES AND SOME CONVERSIONS OF 3-ARYL-5-NITRO-4,5-DIHYDRO-1,2-OXAZOLES
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Reactions of aromatic nitrile N-oxides with nitroethylene lead to formation of 3-aryl-5-nitro-4,5-dihydro-1,2-oxazoles.During heating the above compounds decompose with elimination of nitrous acid, thus affording 3-aryl-1,2-oxazoles.Under nucleophilic reagents a ring opening was observed.
- Baranski, Andrzej,Shvekhgeimer, Genrikh A.
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p. 459 - 467
(2007/10/02)
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