Iron(III) phthalocyanine chloride-catalyzed oxidation–aromatization of α,β-unsaturated ketones with hydrazine hydrate: Synthesis of 3,5-disubstituted 1H-pyrazoles
作者:Junlong Zhao、Jun Qiu、Xiaofeng Gou、Chengwen Hua、Bang Chen
DOI:10.1016/s1872-2067(15)61043-9
日期:2016.4
We have developed an iron(III) phthalocyanine chloride-catalyzed oxidation–aromatization of α,β-unsaturated ketones with hydrazine hydrate. Various 3,5-disubstituted 1H-pyrazoles were obtained in good to excellent yields. This method offers several advantages, including room-temperature conditions, short reaction time, high yields, simple work-up procedure, and use of air as an oxidant. The catalyst
我们开发了一种氯化铁 (III) 酞菁催化的 α,β-不饱和酮与水合肼的氧化芳构化反应。以良好到极好的收率获得了各种 3,5-二取代的 1H-吡唑。该方法具有多种优点,包括室温条件、反应时间短、收率高、后处理程序简单以及使用空气作为氧化剂。催化剂可回收重复使用5次而不会损失活性。