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Whereas photoinduced C\u2500X insertion and halogenation reactions with halohydrocarbons are rare due to many other competitive carbene transformations. Herein, we disclose a blue light\u2010induced C\u2500X (X\u00a0=\u00a0Cl, Br, I) insertion reaction of 3\u2010diazo\u20103\n                    <jats:italic>H<\/jats:italic>\n                    \u2010indoles with halohydrocarbons, leading to the\n                    <jats:italic>gem<\/jats:italic>\n                    \u2010haloalkylation products in moderate to good yields under mild and neutral conditions. Moreover, starting from the same reagents, the halogenation products could be obtained selectively under acidic conditions in the presence of quantitative AcOH. This method offers a complementary approach for the synthesis of halogenated indoles, which are useful synthetic building blocks and essential structural motifs in bioactive molecules. Further synthetic applications could be envisioned for the construction of C\u2500C and C\u2500X bonds via visible light\u2010induced free carbene transfer reactions.\n                  <\/jats:p>","DOI":"10.1002\/chem.71675","type":"journal-article","created":{"date-parts":[[2026,9,8]],"date-time":"2026-09-08T08:51:11Z","timestamp":1788857471000},"update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":1,"title":["Blue Light\u2010Induced C\u2500X Insertion and Halogenation Reaction of 3\u2010Diazo\u20103H\u2010Indoles With Halohydrocarbons"],"prefix":"10.1002","author":[{"given":"Xuliang","family":"Duan","sequence":"first","affiliation":[{"name":"School of Chemistry and Chemical Engineering Zhejiang Sci\u2010Tech University  Hangzhou China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Jiayan","family":"Wang","sequence":"additional","affiliation":[{"name":"School of Chemistry and Chemical Engineering Zhejiang 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