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2005
Pyrazine derivatives
R 0550
First Selective Lithiation of Pyridylpiperazines: Straightforward Access to Potent
— The isomeric of pyridylpiperazines (I), (VII) and (XIV) are se36- 160 Pharmacophores.
lectively lithiated using a superbase that is able to favor complexation by pyridine nitrogen and promote selective metallation. Reaction with various electrophiles affords
the corresponding mono- or bis-functionalized pyridines in good to excellent yields.
— (LOUERAT, F.; GROS*, P.; FORT, Y.; Tetrahedron 61 (2005) 20, 4761-4768;
Synth. Org. React., Fac. Sci., CNRS, Univ. Henri Poincare, F-54506
Vandoeuvre-les-Nancy, Fr.; Eng.) — Bartels
2005
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