Progress in preparation of pyridinecarboxylic acids;

A novel hepta-coordinated organotin complex \[(4-F-C_ 6H_ 4CH_ 2)_ 2Sn(3-O_ 2CC_ 5H_ 4N)_ 2(4-F-C_ 6H_ 4- C_ 2H_5OH)\]_ n was synthesized from the reaction of \[(4-F-C_ 6H_ 4CH_ 2)_ 3Sn\]_ 2O with 3-pyridinecarboxylic acid and characterized by means of elementary analysis, IR and  1H NMR.

Two new bismuth(Ⅲ) complexes with pyridinecarboxylic acid,[Bi(C5H4NCOO)3]〗·H2O(1),BiCl3〗·(C5H4N-COOH)〗·1.

Synthesis of 2-pyridinecarboxylic acid by oxidation of potassium dichromate;

A new reversed phase high performance liquid chromatography method is described for the simultaneous determination of pyridine,2-aminopyridine,2-methylpyridine and 2-pyridinecarboxylic acid.

2-Pyridinecarboxylic acid was prepared by electrooxidation of 2-methylpyridine.

Study on synthesis and crystal structure of the one-dimensional infinite chain tri(o-chlorobenzyl)tin 4-picolinate;

A novel series of the picolinic acid derivatives containing triarylamine units were synthesized through diazo-reaction,Ullmann reaction and Suzuki coupling reaction.

The interaction of Schiff base, which was condensed from 2-pyridinecarboxaldehyde with N,N'-dimethyl-ethylenediamine, with CuCl2·2H2O unexpectedly leads to the formation of compound of the formula [Cu(pic)2]·2CH3OH·2H2O (H-pic = picolinic acid).