Regioselective synthesis of 2-amino-isophthalonitriles through a ring transformation strategy
作者:Fateh V. Singh、Vijay Kumar、Brijesh Kumar、Atul Goel
DOI:10.1016/j.tet.2007.08.056
日期:2007.11
An expeditioussynthesis of several 2-amino-isophthalonitriles and their biaryl compounds is described and illustrated by carbanion-induced ring transformation of functionalized 2H-pyran-2-ones with malononitrile in excellent yields. The strength of the reaction lies in the creation of an aromatic ring at room temperature from six-membered lactones under mild reaction conditions. This approach is an
Arylanthranilodinitriles: A new biaryl class of antileishmanial agents
作者:Fateh V. Singh、Rit Vatsyayan、Uma Roy、Atul Goel
DOI:10.1016/j.bmcl.2006.02.012
日期:2006.5
A series of anthranilodinitrile-based biaryls were synthesized and evaluated in vitro against extracellular promastigotes and intracellular amastigotes of Leishmania donovani. Among various screened compounds, a biaryl with trifluoromethyl group 5f showed 83% inhibition against promastigotes and 70% inhibition against amastigotes of L. donovani at 8 and 20 mu g/mL concentrations, respectively. (C) 2006 Elsevier Ltd. All rights reserved.
Ram, Vishnu Ji; Haque, Navedul; Singh, Sanjay Kumar, Indian Journal of Chemistry - Section B Organic and Medicinal Chemistry, 1993, vol. 32, # 9, p. 924 - 928
A vicarious synthesis of unsymmetrical meta- and para- terphenyls from 2H-pyran-2-ones
作者:Atul Goel、Deepti Verma、Fateh Veer Singh
DOI:10.1016/j.tetlet.2005.10.018
日期:2005.12
An innovative synthesis of terphenyls functionalized with electron-withdrawing or -donating substituents is described and illustrated by carbanion-induced ring transformation of 2H-pyran-2-ones with 2-methoxyacetophenone in excellent yields. The existing protocols for the synthesis of terplienyls are generally inter- and intramolecular aryl-aryl cross couplings in the presence of metal complexes. In this letter, we report a potentially useful alternative to conventional metal-catalyzed cross-coupling reactions. (c) 2005 Elsevier Ltd. All rights reserved.