A Facile Synthesis of New Pyrazolo[3,4-<i>d</i>]pyrimidine Derivatives<i>via</i>a One-Pot Four-Component Reaction with Sodium Acetate Supported on Basic Alumina as Promoter
作者:Shahnaz Rostamizadeh、Masoomeh Nojavan、Reza Aryan、Elyass Isapoor
DOI:10.1002/hlca.201300060
日期:2013.12
efficient one‐pot procedure for the synthesis of 3‐amino‐6‐aryl‐2‐phenylpyrazolo[3,4‐d]pyrimidine derivatives, through the reaction of aldehydes, malononitrile, benzamidine hydrochloride, and hydrazine hydrate in the presence of basic alumina‐supported sodium acetate (AcONa/Al2O3) under reflux conditions, is reported. This protocol has some advantages, including the use of a simple and one‐pot synthetic
在碱性条件下,通过醛,丙二腈,苯甲hydro盐酸盐和水合肼的反应,可以有效地合成3-氨基-6-芳基-2-苯基吡唑并[3,4- d ]嘧啶衍生物的一锅法据报道,在回流条件下氧化铝负载的乙酸钠(AcONa / Al 2 O 3)。该方案具有一些优点,包括使用简单的单锅合成方法直接从四种容易获得的起始原料中获得吡唑并[3,4- d ]嘧啶,简单的后处理,产品的高总收率以及同时进行NO 2转化为氨基,提供了合成更复杂结构的机会。