Some new N-fused heterocyclic compounds have been simply synthesized via a mild and efficient one-pot two-step four-component reaction between hydrazine hydrate, various 3-oxoalkanonitriles, 2-phthaldehydic acid and different CH-acids in ethanol, in the presence of 4-toluenesulfonic acid as catalyst. A large number of bonds (9 bonds) are formed during the transformation.

中文翻译：

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通过一锅法反应合成包含三个N键合杂环的结构，并具有非常高的键形成

在水合肼，乙醇中各种3-氧代烷基腈，2-苯二酸和不同CH-酸之间温和有效的一锅两步四组分反应，已经简单地合成了一些新的N稠合杂环化合物4-甲苯磺酸作为催化剂。在转换过程中形成了大量的键（9个键）。