Pd(ii)-catalyzed regioselective ring opening/[3+2] annulation reaction of enaminones with cyclopropenones: divergent synthesis of γ-butenolides and γ-lactams

Zhilai Zhang, Yu Xu, Menglin Peng, Siyu Song, Yuanzheng Wei, Huimin Hu, Xiuju Wang and Fuchao Yu

Chem. Commun., 2024, 60, 14968
DOI: 10.1039/D4CC05895J

Cu(ii)-catalyzed synthesis of 3-functionalized benzofurans via sequential nucleophilic cyclization and C–C bond activation

Ao Zhou, Muhammad Aslam, Guo-Jie Xu, Ying-Zi Liu, Wei Sun and Meng Sun

Chem. Commun., 2025, 61, 14983
DOI: 10.1039/D5CC01764E

C–H activation-initiated spiroannulation reactions and their applications in the synthesis of spirocyclic compounds

Qianting Zhou, Bin Li, Xinying Zhang and Xuesen Fan

Org. Biomol. Chem., 2024, 22, 2324
DOI: 10.1039/D3OB02056H

Palladium-catalyzed sequential [3+2] cyclization/C–H activation of o-iodostyrenes with cyclopropenones as C2 synthons

Jie Sun, Shaojie Zhang, Ruixue Wang, Zeng Lv and Xin-Xing Wu

Chem. Commun., 2025, 61, 8200
DOI: 10.1039/D5CC01189B

Dehydrative alkynylation of 3-hydroxyisoindolinones with terminal alkynes for the synthesis of 3-alkynylated 3,3-disubstituted isoindolinones

Kai-Cheng Yang, Shi-Lu Zheng, Zhong Wen, Yu-Shan Zhang, Hai-Liang Ni and Long Chen

Org. Biomol. Chem., 2024, 22, 3453
DOI: 10.1039/D4OB00190G

Rhodium-catalyzed divergent dehydroxylation/alkenylation of hydroxyisoindolinones with vinylene carbonate

Jiang Nan and Lu Liang

Chem. Commun., 2023, 59, 14559
DOI: 10.1039/D3CC03760F

Rh(iii)-catalyzed [3 + 3] spirocyclization of 3-aryl-3-hydroxyisoindolinones with vinylene carbonate as a three-atom unit

Hai-Shan Jin and Cai-Cai Liang

Org. Biomol. Chem., 2023, 21, 5361
DOI: 10.1039/D3OB00796K

Synthesis of Isoindole N-Oxides by Palladium-Catalyzed C–H Functionalization of Aldonitrones

Jakub Brześkiewicz and Rafał Loska

J. Org. Chem., 2023, 88, 2385
DOI: 10.1021/acs.joc.2c02797

Ag(I)-Catalyzed Addition of Cyclopropenones and Alcohols via C—C Bond Cleavage

Shulin Zhang, Zhou Zhang and Meng Sun

Chinese Journal of Organic Chemistry, 2024, 44, 2233
DOI: 10.6023/cjoc202403007

Ring Expansion Strategy toward Seven/Eight-Membered 1,4-Diazaheterocycle Ketones from Imidazolidines with Cyclobutenones/Diarylcyclopropenones

Deli Cai, Yulu Zhang, Wen Shao, Ying Shao, Jiangtao Sun and Shengbiao Tang

Org. Lett., 2025, 27, 9382
DOI: 10.1021/acs.orglett.5c02626

Imidazolium‐Dithiocarboxylate Zwitterions Catalysed Ring‐Opening Additions of Cyclopropenones

Qi Wu, Fang Zhang, Qichao Zhang, Lin He, Jichang Liu and Guangfen Du

Adv Synth Catal, 2025, 367
DOI: 10.1002/adsc.202401476

Rh(III)-Catalyzed [3 + 3]-Coupling Cyclization of 3-Hydroxyisoindolinones with Carbenoids: Rapid Access to Spirolactam Skeletons

Chengjie Wang, Huanfeng Jiang and Wei Zeng

Org. Lett., 2024, 26, 7728
DOI: 10.1021/acs.orglett.4c02889

Pd-Catalyzed Three-Component Coupling of Cyclopropenones via Sequential C–C Bond Activation and Allylation

Zhou Zhang, Fei-Fei Liang, Shu-Lin Zhang, Wei Sun, An-Xi Zhou and Meng Sun

Org. Lett., 2024, 26, 4262
DOI: 10.1021/acs.orglett.4c01200

Rh(III)-Catalyzed [3 + 4] Annulation of 3-Arylisoindolinones with 2-Methylidenetrimethylene Carbonate via C–H Activation to Access Isoindolinone Spirobenzoxepines

Hai-Shan Jin, Yan Wang, Ru-Jie Zhang and Li-Ming Zhao

Org. Lett., 2025, 27, 6611
DOI: 10.1021/acs.orglett.5c01573

Recent progress in cycloaddition reactions of cyclopropenone

Shibo Lin, Lan Xiang, Chun Liu, Xi Chen and Yongqin Ye

Arabian Journal of Chemistry, 2024, 17, 105845
DOI: 10.1016/j.arabjc.2024.105845

Rh(III)-Catalyzed Double C–H Functionalization of Indoles with Cyclopropenones via Sequential C–H/C–C/C–H Bond Activation

Yan-Bo Zhang, Bin-Shi Li, Guo-Jie Xu, Wei Sun and Meng Sun

Org. Lett., 2023, 25, 3922
DOI: 10.1021/acs.orglett.3c01292

Rh-Catalyzed Formal [3 + 2] Cycloaddition Reactions with Cyclopropenones via Sequential C–H/C–C Bond Activation

Qing-Long Qu, Yu-Tong Ren, Jun-Tao Cao, Wei Sun and Meng Sun

Org. Lett., 2025, 27, 1967
DOI: 10.1021/acs.orglett.5c00248

In(III)-Catalyzed 1,2-Hydrophosphorylation of 3-Alkynyl-3-hydroxyisoindolinones to 3,3-Disubstituted Isoindolinones Featuring Both Phosphoryl and Alkynyl Groups at the C3-Position

Huan-Zhu Xue, Zhong Wen, Xue-Mei Zhou, Hai-Liang Ni and Long Chen

J. Org. Chem., 2025, 90, 1740
DOI: 10.1021/acs.joc.4c02035

Palladium-Catalyzed Regioselective [3 + 2] Annulation with N-Allenamides at the Proximal C═C Bond: Synthesis of γ-Amino-α′-methylenecyclopentenones

Yidong Wang, Hang Zhou, Yan Sun, Shenglong Wang, Ruiqiang Lu, Shiwan Sun, Ying Han, Liuzhou Gao and Junliang Zhang

Org. Lett., 2025, 27, 4225
DOI: 10.1021/acs.orglett.5c00911

Palladium-Catalyzed Ring-Opening Reaction of Cyclopropenones with Vinyl Epoxides

Li-Guo Lu, Jun-Hua Chen, Xiao-Bo Huang, Miao-Chang Liu, Yun-Bing Zhou and Hua-Yue Wu

J. Org. Chem., 2022, 87, 16851
DOI: 10.1021/acs.joc.2c01976

Arenethiolate-Catalyzed 1,5-HAT of Aryl Halides: Synthesis of γ-Spirolactams

Wei Xiao, Shengyun Liu, Yuhui Lin, Xiaoyu Zhou and Jie Wu

Org. Lett., 2024, 26, 3081
DOI: 10.1021/acs.orglett.4c00685

Rh(III)‐Catalyzed Cascade [3 + 3] Spiroannulation of N‐Acyl Ketimines with Iodonium Ylides: Access to Spiro‐N,O‐Ketals

Jiaojiao Wen, Xia Zhang, Chao Pi, Yangjie Wu and Xiuling Cui

Eur J Org Chem, 2025, 28
DOI: 10.1002/ejoc.202500155

Construction of Nitrogen Spirocycles in a Tandem Co(III)‐catalyzed C−H Activation/Dipolar Cycloaddition Reaction

Jakub Brześkiewicz and Rafał Loska

Adv Synth Catal, 2023, 365, 4241
DOI: 10.1002/adsc.202301113

Synthesis of Indazole Fused 2-Benzazepines with Polarity-Dependent Fluorescence Based on Formal [4 + 3] Annulation of 3-Aryl-1H-indazoles with Cyclopropenones

Qianting Zhou, Haiyun Xu, Chang Gao, Yijun Gong, Xinying Zhang and Xuesen Fan

J. Org. Chem., 2025, 90, 5244
DOI: 10.1021/acs.joc.5c00166

Ag-Catalyzed Selective C–C Bond Activation of Cyclopropenones to Access α-Alkylidene Lactones

Shu-Lin Zhang, Zhao-Bing Wu, Chun-Xin Zhao, Yu-Xin Bai, Wei Sun and Meng Sun

Org. Lett., 2024, 26, 6120
DOI: 10.1021/acs.orglett.4c01853

Ring-Strain-Driven Annulation of Cyclopropenones with Hydrazones via Nucleophilic Phosphine Catalysis

Shan Jiang, Xiaoqi Yang, Xiao-Le Han, Yi Wei and Xiao-Qiang Hu

Org. Lett., 2026, 28, 2056
DOI: 10.1021/acs.orglett.5c05338

Rh-Catalyzed [2 + 2 + 2] Cycloaddition between Aryl-Substituted 1,6-Diynes and Monoynes: Controlling Alkyne Reactivity with Hexafluoroisopropanol

Shurika Innami, Takashi Yamazaki, Juntaro Nogami and Ken Tanaka

ACS Catal., 2025, 15, 15617
DOI: 10.1021/acscatal.5c03734

Synthesis of Spiroisoindolinones via Ru(II)-Catalyzed Spiroannulation of N-Acyl Ketimines with Aryl Isocyanates/Isothiocyanates through Aromatic C–H Bond Activation

Zahid Ahmad Khan and Vinod K. Singh

J. Org. Chem., 2023, 88, 17438
DOI: 10.1021/acs.joc.3c02275

Synthesis of Indenone-Fused Pyran Derivatives from Aryl Enaminones and Cyclopropenones through Unsymmetrical Relay C–H Bond Activation and Double C–C/C–O Bond Formation

Chun Yang, Bin Li, Xinying Zhang and Xuesen Fan

Org. Lett., 2024, 26, 6602
DOI: 10.1021/acs.orglett.4c02197

Fe(III)-Catalyzed Ring Expansion of Cyclopropenone from Olefins via Radicals to Access Pyrone and Indanone Derivatives

Yao Xiao, Dong-Wei Huang, Jie Liao, Bei Wang, Yu-Long Li and Ji-Yu Wang

Org. Lett., 2025, 27, 814
DOI: 10.1021/acs.orglett.4c04492