An efficient, inexpensive and environmentally friendly synthesis of novel 3-amino-2-benzoyl-1-aryl-1H-pyrazolo[1,2-b]phthalazine-5,10-dione and 3-amino-2-benzoyl-1-aryl-1H-pyrazolo[1,2-a]pyridazine-5,8-dione derivatives has been developed via one-pot three-component reaction of phthalhydrazide or maleic hydrazide, aldehydes and arylacetonitrile in the presence of catalytic amount of InCl₃ as a Lewis acid catalyst under solvent-free conditions. The most important features of the present protocol are mild reaction conditions, short reaction times, high yields, and a wide range of functional group tolerance.

中文翻译：

---

无溶剂条件下，氯化铟（III）催化合成新型1 H-吡唑并[1,2- b ]邻苯并嗪-5,10-二酮和1 H-吡唑并[1,2- a ]哒嗪-5,8-二酮状况

一种新型3-氨基-2-苯甲酰基-1-芳基-1 H-吡唑并[1,2 - b ]酞嗪-5,10-二酮和3-氨基-2-苯甲酰基-1的高效，廉价和环境友好的合成方法在催化量的InCl存在下，通过邻苯二甲酰肼或顺丁烯二酰肼，醛和芳基乙腈的一锅三组分反应，开发了-芳基-1 H-吡唑并[1,2- a ]哒嗪-5,8-二酮衍生物₃在无溶剂条件下作为路易斯酸催化剂。本协议的最重要特征是温和的反应条件，短的反应时间，高收率和广泛的官能团耐受性。