Sulfur-containing heterocycles, where the S(R) moiety is located within the cyclic structure, have found tremendous applications in the fields of chemical, pharmaceutical, and materials sciences due to their unique chemical, biological and pharmaceutical activities. Recent years have witnessed increasing interest in sulfur-containing heterocycles, and new methods for their synthesis have been reported by adopting modern methodologies and technologies through insertion of sulfur dioxide. The main objective of this Account is to overview the latest major developments on the synthesis of sulfur-containing heterocyclic systems, mainly covering thermo-, photo- and electron-induced cyclization through the insertion of sulfur dioxide (SO₂). We aim to provide the readership with a comprehensive understanding of this topic and offer a positive outlook on the promising future of this field.

1 Introduction

2 Thermal-Induced Cyclization

3 Photoinduced Radical Cyclization

4 Electron-Induced Radical Cyclization

5 Conclusion

含硫杂环，其中S(R)部分位于环状结构内，由于其独特的化学、生物和药物活性，在化学、药物和材料科学领域有着巨大的应用。近年来，人们对含硫杂环的兴趣日益浓厚，并且通过采用现代方法和技术通过插入二氧化硫来合成其新方法已被报道。本报告的主要目的是概述含硫杂环体系合成的最新主要进展，主要涵盖通过插入二氧化硫（SO ₂）进行热诱导、光诱导和电子诱导环化。我们的目标是让读者全面了解这一主题，并对这一领域的前景提供积极的展望。

1 简介

2 热诱导环化

3 光诱导自由基环化

4 电子诱导自由基环化

5 结论