Study of cyclyzation of o-(1-Alkynyl)-and o-(1, 3-Butadiynyl) aryltriazenes under the action of acids

NA Danilkina, EG Gorbunova, VN Sorokoumov…

Index: Danilkina; Gorbunova; Sorokoumov; Balova Russian Journal of Organic Chemistry, 2012 , vol. 48, # 11 p. 1424 - 1434 Zh. Org. Khim., 2012 , vol. 48, # 11 p. 1428 - 1439,12

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Abstract

Abstract The investigation of Richter cyclization of o-(1-alkynyl)-and o-(1, 3-butadiynyl) arenediazonium salts generated by acid cleavage of triazenes was carried out by the methods of NMR and ESI MS (Electrospray Ionization Mass Spectrometry). The effect was shown of the substituents at the carbon atom of the triple bond and in the aromatic ring, of the solvent, temperature, and the reagents ratio on the rate of the cyclization and the yield ...