In this paper, we have described a simple and efficient strategy for the synthesis of fused pyrazole derivatives. The key steps of our strategy involves hydroamination, copper-catalyzed cross dehydrogenative coupling (CDC) followed by aromatization (aerial oxidation) in one-pot. Our strategy offers a valuable alternative to known methods for synthesis of fused pyrazole derivatives. Overall, we have synthesized 13 diverse fused pyrazole derivatives in moderate to excellent yields.

中文翻译：

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铜（II）催化的环胺活化-α-C（sp ³）-H：合成稠合吡唑衍生物的简单有效策略

在本文中，我们描述了一种简单而有效的策略，用于合成稠合的吡唑衍生物。我们策略的关键步骤包括加氢胺化，铜催化的交叉脱氢偶联（CDC），然后在一个锅中进行芳构化（航空氧化）。我们的策略为合成稠合吡唑衍生物的已知方法提供了有价值的替代方法。总体而言，我们以中等至出色的产率合成了13种不同的稠合吡唑衍生物。