Literature DB >> 17405108

Pyrazolo[1,5-a]pyrimidines. A combined multinuclear magnetic resonance (1H, 13C, 15N, 19F) and DFT approach to their structural assignment.

Dionisia Sanz1, Rosa M Claramunt, Anil Saini, Vinod Kumar, Ranjana Aggarwal, Shiv P Singh, Ibon Alkorta, José Elguero.   

Abstract

Multinuclear magnetic resonance spectroscopy together with GIAO-DFT calculations allowed establishment of the structure of the products obtained by condensation of 3(5)-amino-4-phenyl-1H-pyrazole and beta-dicarbonyl compounds bearing a trifluoromethyl group. They are 3-phenyl-5-(R)-7-trifluoromethylpyrazolo[1,5-a]pyrimidines. Copyright 2007 John Wiley & Sons, Ltd.

Entities:  

Year:  2007        PMID： 17405108     DOI： 10.1002/mrc.1992

Source DB:  PubMed          Journal:  Magn Reson Chem        ISSN： 0749-1581            Impact factor:   2.447


  2 in total

1.  A facile environment-friendly one-pot two-step regioselective synthetic strategy for 3,7-diarylpyrazolo[1,5-a]pyrimidines related to zaleplon and 3,6-diarylpyrazolo[1,5-a]pyrimidine-7-amines assisted by KHSO₄ in aqueous media.

Authors:  Asem Satyapati Devi; Shunan Kaping; Jai Narain Vishwakarma
Journal:  Mol Divers       Date:  2015-05-28       Impact factor: 2.943

2.  An experimental and theoretical NMR study of NH-benzimidazoles in solution and in the solid state: proton transfer and tautomerism.

Authors:  Carla I Nieto; Pilar Cabildo; M Ángeles García; Rosa M Claramunt; Ibon Alkorta; José Elguero
Journal:  Beilstein J Org Chem       Date:  2014-07-16       Impact factor: 2.883
  2 in total

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