The palladium(0)-catalyzed condensation of aryl halides with the sodium salts of phenylsulfonylacetonitrile and diethyl cyanomethylphonate in dimethoxyethane gave the corresponding α-phenylsulfonylareneacetonitriles and diethyl arylcyanomethylphosphonates in good yields.The α-phenylsulfonylareneacetonitriles were easily desulfonylated with zinc to give the areneacetonitriles, and the arylcyanomethylphonates were converted to the alkylideneareneacetonitriles by means of the Horner-Emmons reaction.
Myocardium-protecting pyridine derivatives having an anti-arrhythmic
申请人:C.M. Industries
公开号:US04356177A1
公开(公告)日:1982-10-26
The present invention relates to new pyridine derivatives of formula: ##STR1## wherein R.sub.1 is an alkyl or an alicyclic group, R.sub.2 and R.sub.3 are alkyls or alicyclic groups or form an heterocycle with the atom of nitrogen to which they are bonded; the invention also relates to a process for the preparation of said derivatives and the medicines containing at least one of the said derivatives.
pyridine-substituted acrylonitriles toward divergent fused N-heterocycles synthesis is reported. The heterodifunctionalization reaction with Cu(OAc)2 and urea as the nitrogen source accesses to nitrile-substituted pyrazolo[1,5-a]pyridines in moderate to good yields, while the homodifunctionalization reaction with FeBr3 leads to synthesis of nitrile-substituted indolizines in excellent yields.