Regioselective synthesis of 2-chloro-3-pyridinecarboxylates
作者:Tony Y. Zhang、James R. Stout、James G. Keay、Eric F.V. Scriven、Joseph E. Toomey、Gerald L. Goe
DOI:10.1016/0040-4020(95)00788-a
日期:1995.11
5-oxopentenenitrile derivatives. In the presence of anhydrous HCl, these compounds cyclize to yield 2-chloro-3-pyridinecarboxylates. The process is highly regiospecific and useful in the synthesis of 2,3-disubstitutedpyridines.
Ruthenium-Catalyzed Synthesis of 1,5-Dichlorides by Sequential Intermolecular Kharasch Reactions
作者:Katrin Thommes、Mariano A. Fernández-Zúmel、Charlotte Buron、Aurélien Godinat、Rosario Scopelliti、Kay Severin
DOI:10.1002/ejoc.201001213
日期:2011.1
Sequential intermolecular atom transfer radical addition reactions of activated dichlorides Cl2CRR′ (R = CN, CO2Et, R′ = H, CN, CO2Et) with two olefins catalyzed by [Cp*RuCl2(PPh3)] in the presence Mg allow the synthesis of linear 1,5-dichlorides. Different olefins can be employed in the first and in the second addition reaction. The reaction products are interesting synthetic precursors as demonstrated
Process for producing 2-halo-nicotinic acid derivatives and precursors thereto
申请人:REILLY INDUSTRIES, INC.
公开号:EP0846684A2
公开(公告)日:1998-06-10
A process for preparing a compound of the formula (I)
which comprises a base-catalyzed reaction of a compound of the formula (V).
with a compound of the formula (VI)
wherein X is C1 or Br and Y is a carbonyl group, to thereby form said compound of the formula (I). In addition a process for producing a 2-pyridinecarboxylate compound, comprising carbonylating a specific 2-fluoronicotinic acid compound in the presence of CO, an alcohol, and a transition metal catalyst.