57556-49-7Relevant academic research and scientific papers
Variable noninnocence of substituted azobis(phenylcyanamido)diruthenium complexes
Choudhuri, Mohommad M. R.,Behzad, Mahdi,Al-Noaimi, Mousa,Yap, Glenn P. A.,Kaim, Wolfgang,Sarkar, Biprajit,Crutchley, Robert J.
, p. 1508 - 1517 (2015/06/16)
The synthetic chemistry of substituted 4,4′-azobis(phenylcyanamide) ligands was investigated, and the complexes [{Ru(tpy)(bpy)}2( μ-L)][PF6]2, where L = 2,2′:5,5′-tetramethyl-4,4′-azobis(phenylcyanamido) (Me4adpc2-), 2,2′-dimethyl-4,4′-azobis(phenylcyanamido) (Me2adpc2-), unsubstituted (adpc2-), 3,3′-dichloro-4,4′-azobis(phenylcyanamido) (Cl2adpc2-), and 2,2′:5,5′-tetrachloro-4,4′-azobis(phenylcyanamido) (Cl4adpc2-), were prepared and characterized by cyclic voltammetry and vis-near-IR (NIR) and IR spectroelectrochemistry. The room temperature electron paramagnetic resonance spectrum of [{Ru(tpy)(bpy)}2( μ-Me4adpc)]3+ showed an organic radical signal and is consistent with an oxidation-state description [RuII, Me4adpc?-, RuII]3+, while that of [{Ru(tpy)(bpy)}2( μ-Cl2adpc)]3+ at 10 K showed a low-symmetry RuIII signal, which is consistent with the description [RuIII, Cl2adpc2-, RuII]3+. IR spectroelectrochemistry data suggest that [{Ru(tpy)(bpy)}2( μ-adpc)]3+ is delocalized and [{Ru(tpy)(bpy)}2( μ-Cl2adpc)]3+ and [{Ru(tpy)(bpy)}2( μ-Cl4adpc)]3+ are valence-trapped mixed-valence systems. A NIR absorption band that is unique to all [{Ru(tpy)(bpy)}2( μ-L)]3+ complexes is observed; however, its energy and intensity vary depending on the nature of the bridging ligand and, hence, the complexes oxidation-state description.
ALLOSTERIC MODULATORS OF METABOTROPIC GLUTAMATE RECEPTORS
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, (2013/05/21)
Disclosed are compounds of Formula (I), and salts thereof, wherein R1, RA2, RA3 and RA4, are defined herein, which have properties for positive allosteric modulation of mGluR-4 receptor sites. Also described are pharmaceutical formulations comprising the compounds of Formula (I) or their salts, and methods of treating Parkinson's disease and related disorders using the same.
ALLOSTERIC MODULATORS OF METABOTROPIC GLUTAMATE RECEPTORS
-
Paragraph 0113, (2013/05/21)
Formula (I), and salts thereof, wherein R1, RA2, RA3 and RA4, are defined herein, which have properties for positive allosteric modulation of mGluR-4 receptor sites. Also described are pharmaceutical formulations comprising the compounds of Formula (I) or their salts, and methods of treating Parkinson's disease and related disorders using the same.
Quinone Imine Route to Benzimidazol-2-ylcarbamates. Part 1. Synthesis of Open-chain and Cyclic 5-Acylamino Derivatives.
Rajappa, Srinivasachari,Sreenivasan, Ramaswami,Khalwadekar, Asha
, p. 1657 - 1675 (2007/10/02)
The synthesis of the N',N''-bismethoxycarbonyl-N-(4-acylaminophenyl)guanidines (4) and (7) is described.Oxidation of these with LTA has led to the benzimidazol-2-ylcarbamates. (8), (9) and (10) through a regiospecific cyclisation of quinone imine intermediates.If the acylamino group is part of a ring, the yield of benzimidazoles (15) increases with the size of the lactam ring.The direction of ring closure may be controlled by electronic and steric factors.
