[Others] Directed lithiation of 4-halopyridines: chemoselectivity, regioselectivity and application to synthesis

Directed lithiation of 4-halopyridines:  chemoselectivity, regioselectivity and application to synthesis.     Marsais, F.; Trecourt, F.; Breant, P.; Queguiner, G.    Lab. Chim. Org. Fine Heterocycl.,  IRCOF,  Mont Saint Aignan,  Fr.    Journal of Heterocyclic Chemistry  (1988),  25(1),  81-7.  CODEN: JHTCAD  ISSN: 0022-152X.  Journal  written in English.    CAN 109:170193    AN 1988:570193    CAPLUS