Abstract
Methylphenylpropargyl-(3-phenylpropargyl)-ammonium bromide salts are cyclized almost quantitatively under base-catalysis conditions with the formation of 2-methyl-2-phenylbenz[f]isoindolinium bromide. The allyl analog is subject to rearrangement-decomposition, to a Stevens rearrangement, and to nucleophilic substitution, the cyclic product being obtained in low yield. Methylphenylpropargyl-(3-vinylpropargyl)ammonium bromide is mainly cyclized, but the 3-isopropenylpropargyl analog of this salt is subject to cyclization and subsequent decomposition under analogous conditions.
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Part 225 of the series on “Investigations on Amines and Ammonium Compounds,” see [1] for part 224.
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Translated from Khimiya Geterotsklicheskikh Soedinenii, No. 1, pp. 68–72, January, 1995.
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Chukhadzhyan, É.O., Manasyan, L.A., Chukhadzhyan, É.O. et al. Behavior of propargyl- and allylpropargyl-ammonium salts in aqueous alkaline medium. Synthesis of 2-methyl-2-phenylbenz[f]isoindolinium and 2-methyl-2-phenylisoindolinium salts. Chem Heterocycl Compd 31, 58–62 (1995). https://doi.org/10.1007/BF01171292
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DOI: https://doi.org/10.1007/BF01171292