Compounds of the formula :
are described in which R₁ and R₂ are C₁₋₄ alkyl or, taken together with the nitrogen atom to which they are attached, pyrolidinyl or piperidinyl; and X is chloro, bromo or iodo. These compounds are intermediates for azatadine.
A process for their preparation and their reaction with an alkali metal cyanide to prepare 3-phenethyl-2-cyano-pyridine are described.
式 :
式中:R₁ 和 R₂ 是 C₁₋₄ 烷基,或与所连接的氮原子一起是
吡咯烷基或
哌啶基;X 是
氯、
溴或
碘。这些化合物是
阿扎他啶的中间体。
本文介绍了制备这些化合物的过程,以及它们与碱
金属
氰化物反应制备 3-苯乙基-2-
氰基吡啶的过程。