Unsymmetrically 3,5-disubstituted 4-(5-X-2-furyl)-2,6-dimethyl-1,4-dihydropyridines (where X = H, Br, NO2) have been synthesized and characterized by spectral methods (IR, UV, 1H NMR and MS). The modified Hantzsch method made it possible to prepare the title compounds as well as their N-alkylated derivatives. The paper also describes the N-alkylation of sodium salts of substituted 1,4-dihydropyridines using the phase-transfer catalysis.
通过光谱方法(红外线、紫外线、1H核磁共振和质谱),合成并表征了非对称3,5-二取代的4-(5-X-2-呋喃基)-2,6-二甲基-1,4-二氢吡啶类化合物(其中X = H、Br、NO2)。改良的Hantzsch方法使得制备了标题化合物及其N-烷基化衍生物成为可能。该论文还描述了使用相转移催化法对取代的1,4-二氢吡啶的钠盐进行N-烷基化的过程。