Recent Applications of 2,2-Disubstituted-1,3-Dicarbonyls

Background: 2,2-Disubstituted-1,3-dicarbonyls, including iodonium ylides, indanedioneketene precursors, sulfur ylides, 2,2-difluoro-1,3-diketones, 2,2-dihydroxyl- 1,3-diketones and cyclopropyl 1,3-dicarbonyls, are important intermediates in organic synthesis. Methodology: They are used in the preparation of various amides, benzofurans, furanones, quinones, and so on. However, there is no review to summarize their multiperformance and fundamental mechanisms. Conclusion: This review will focus on recent applications of 2,2-disubstituted-1,3- dicarbonyls mainly based on three reactivity patterns, which may enlighten the further research.