133928-63-9Relevant articles and documents
Application of organolithium and related reagents in synthesis. Part 9. Synthesis and metallation of 4-chloropicolin- and 2-chloroisonicotinanilides. A useful method for preparation of 2,3,4-trisubstituted pyridines
Epsztajn,Bieniek,Kowalska
, p. 1697 - 1706 (1991)
The synthesis and metallation (nBuLi) of 4-chloropicolin- and 2-chloroisonicotinanilides (1) and (2) as a way of regiospecific transformation of picolinic and isonicotinic acids into 2,3,4-trisubstituted pyridines (9) and (10), is described. The anilide moiety (masking group) of the formed C3-substituted chloro-anilides (9) and (10) appeared to be effectively removable on acid hydrolysis.