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2005
Pyridine derivatives
R 0380
Pyridino-Directed Lithiation of Anisylpyridines: New Access to Functional Py— In the presence of BuLi/Me2N(CH2)2OLi superbase, 9 anisylpyridines
31- 138 ridylphenols.
are selectively lithiated in α-position to the ring nitrogen. Functionalization affords a
variety of derivatives. Under mild conditions the latter are smoothly demethylated to
give the corresponding phenols. A subsequent cyclization of an appropriate isomer into
the corresponding benzofuropyridine (IX) is also performed. — (PARMENTIER, M.;
GROS*, P.; FORT*, Y.; Tetrahedron 61 (2005) 13, 3261-3269; Synth. Organomet.
React., CNRS, Univ. Henri Poincare, F-54506 Vandoeuvre-les-Nancy, Fr.; Eng.) —
Klein
2005
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