Heterocyclic compounds are the ones that have always remained in the limelight owing to their superior contributions toward various disciplines such as biology, medicine, material science, pharmaceutical science, industry and so on. They form the building blocks of DNA and RNA macromolecules. Suitable tuning of these heterocyclic compounds can result in chemotherapeutic moieties with superlative efficiency. Seven‐membered heterocyclic compounds are an important class of heterocyclic chemistry. Some of them are azepine, oxepine, thiepine, diazepine, thiazepine and so on. Transition metal‐catalyzed synthesis of heterocycles has been the most explored in the recent past. Palladium is known as the best suitable catalyst for the same and that is the result of its excellent functional group tolerance and catalytic potency. Here, we intend to summarize the various investigations made on the palladium‐catalyzed synthesis of seven‐membered heterocycles. To the best of our knowledge, this is the first review in this topic and covers literature up to 2020.

中文翻译：

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钯催化七元杂环的合成概述

杂环化合物由于在生物学，医学，材料科学，制药科学，工业等各个领域的杰出贡献而一直备受关注。它们构成了DNA和RNA大分子的组成部分。这些杂环化合物的适当调节可以产生具有最高效率的化学治疗部分。七元杂环化合物是一类重要的杂环化学。其中一些是阿西平，奥西平，硫平，二氮杂，硫氮平等。过渡金属催化的杂环合成是近来研究最多的。钯被公认为是最合适的催化剂，这是其出色的官能团耐受性和催化效能的结果。这里，我们打算总结对钯催化的七元杂环合成的各种研究。据我们所知，这是该主题的第一篇评论，涵盖了直到2020年的文献。