Migratory insertion of copper-allenylidene from propargyl ester. Issue 32 (30th March 2022)

• Record Type: Journal Article
• Authors: Yao, Qinglin; Liu, Boxiang; Cao, Tongxiang; Zhu, Shifa
• Is Part Of: Chemical communications. Volume 58:Issue 32(2022)
• Page Start: 4969
• Page End: 4972
• Publication Date: 2022-03-30
• Subjects: Chemistry -- Periodicals; 540
• DOI: 10.1039/d2cc00681b
• Languages: English
• ISSNs: 1359-7345

Abstract

Abstract : The highly efficient homo-dimerization and cross-coupling of propargyl esters via migratory insertion of the copper-allenylidenes have been developed to give various 1-en-3, 5-diynes, [5]cumulenes and 1, 3-diynes with moderate to excellent yields. Abstract : The highly efficient copper-catalyzed homo-dimerization and cross-coupling of propargyl esters have been developed. Various 1-en-3, 5-diynes, [5]cumulenes and 1, 3-diynes were successfully furnished via the copper-allenylidene intermediates with moderate to excellent yields. Migratory insertion is proposed as the key step to achieve the selectivity at the carbene carbon of the copper-allenylidene.