A new improved process for producing pyridinaldehydes and hydrazone derivatives thereof, for example, pyridinaldehyde-phenylhydrazones, is described. This comprises reacting an aminomethylpyridine with an aldehyde or a ketone to give a compound of the formula ##STR1## isomerizing the compound (III), in the presence of suitable catalysts, to a compound of the formula ##STR2## and converting the compound (V), in the presence of an acid and optionally in the presence of a hydrazine, into a pyridinaldehyde or a pyridinaldehyde-hydrazone. It is possible to produce by the process according to the invention pyridinaldehydes and pyridinaldehyde-hydrazones in a simple manner, under mild ecologically favorable conditions and in good to very good yields.
Iron and ruthenium complexes [M2(CO)6(pyridine-2-carbaldehyde-imine)] having a σ-N,μ2-N′, η2-CN′ bonded 6-R1-py-2-C(R2)NR ligand; x-ray structure of [Ru2(CO)5 &{1,2-bis(μ-isopropylamido)-1,2-bis(2-pyridyl)ethane}] containing two C|C linked pyridine-2-carbaldehyde-imine ligands
作者:Louis H. Polm、Gerard van Koten、Cornelis J. Elsevier、Kees Vrieze、Bernard F.K. Van Santen、Casper H. Stam
DOI:10.1016/0022-328x(86)80154-1
日期:1986.5
Haddleton, David M.; Duncalf, David J.; Kukulj, Dax, European Journal of Inorganic Chemistry, 1998, # 11, p. 1799 - 1806
作者:Haddleton, David M.、Duncalf, David J.、Kukulj, Dax、Crossman, Martin C.、Jackson, Stuart G.、Bon, Stefan A. F.、Clark, Andrew J.、Shooter, Andrew J.
DOI:——
日期:——
A paramagnetic 1H NMR study of tetrabromo(N-alkyl-methylpyridine-2-carbaldimine)tungsten(IV) and related complexes
Process for producing hydrazone derivatives of pyridinaldehydes
申请人:Ciba-Geigy Corporation
公开号:US04237275A1
公开(公告)日:1980-12-02
An improved process for producing pyridinaldehydes and hydrazone derivatives thereof, for example, pyridinaldehyde-phenylhydrazones, is described. This comprises reacting a aminomethylpyridine with an aldehyde or a ketone to give a compound of the formula ##STR1## isomerizing the compound (III), in the presence of suitable catalysts, to a compound of the formula ##STR2## and converting the compound (V), in the presence of an acid and optionally in the presence of a hydrazine, into a pyridinaldehyde or a pyridinaldehyde-hydrazone. It is possible to produce by the process according to the invention pyridinaldehydes and pyridinaldehyde-hydrazones in a simple manner, under mild ecologically favorable conditions and in good to very good yields.