Ru<sub>3</sub>(CO)<sub>12</sub>-Catalyzed Intermolecular Cyclocoupling of Ketones, Alkenes or Alkynes, and Carbon Monoxide. [2 + 2 + 1] Cycloaddition Strategy for the Synthesis of Functionalized γ-Butyrolactones
The ruthenium-catalyzed intermolecular cyclocoupling of ketones (or aldehydes), alkenes (or alkynes), and CO, which leads to γ-butyrolactones, is described. The reaction represents the first example of the catalytic synthesis of heterocycles via an intermolecular carbonylative [2 + 2 + 1] cycloaddition. A wide variety of ketones, such as α-dicarbonyl compounds and N-heterocyclic ketones, can be used
作者:Sreejyothi、Gautam, Nimisha、Maji, Subir、Bhattacharyya, Kalishankar、Mandal, Swadhin K.
DOI:10.1021/jacs.4c04376
日期:——
relevant γ-butyrolactones through dual activation under ambient reaction conditions. The highly nucleophilic phosphorus(I) center plays a key role in leading to this transformation. Extensive experimental and theoretical studies suggest that the phosphorus center exhibits facile switching between its reduced state [P(I)] and its oxidized state [P(III)] during this transformation, mimicking the behavior of