Propargyl α-aryl-α-diazoacetates as robust reagents for the effective C H bond functionalization of 1,3-diketones via scandium catalysis
摘要:
Propargyl alpha-aryl-alpha-diazoacetate a new class of reagent is developed for the effective C-H bond functionalization of 1,3-diketones at room temperature. The combination of scandium triflate and propargyl alpha-aryl-alpha-diazoacetate proved to be efficient catalyst-reagent system for the controlled C-H bond functionalization to afford 1,3-dicarbonyl alkylation. The protocol uses inexpensive Sc(OTf)(3) (5 mol%) and the reaction did not require the use of expensive catalysts or ligands and worked efficiently at room temperature. The practicality of the protocol has been demonstrated by the gram scale synthesis. (C) 2019 Elsevier Ltd. All rights reserved.
Propargyl α-aryl-α-diazoacetates as robust reagents for the effective C H bond functionalization of 1,3-diketones via scandium catalysis
摘要:
Propargyl alpha-aryl-alpha-diazoacetate a new class of reagent is developed for the effective C-H bond functionalization of 1,3-diketones at room temperature. The combination of scandium triflate and propargyl alpha-aryl-alpha-diazoacetate proved to be efficient catalyst-reagent system for the controlled C-H bond functionalization to afford 1,3-dicarbonyl alkylation. The protocol uses inexpensive Sc(OTf)(3) (5 mol%) and the reaction did not require the use of expensive catalysts or ligands and worked efficiently at room temperature. The practicality of the protocol has been demonstrated by the gram scale synthesis. (C) 2019 Elsevier Ltd. All rights reserved.
Propargyl α-aryl-α-diazoacetates as robust reagents for the effective C H bond functionalization of 1,3-diketones via scandium catalysis
作者:Balu S. Navale、Debasish Laha、Ramakrishna G. Bhat
DOI:10.1016/j.tetlet.2019.06.026
日期:2019.7
Propargyl alpha-aryl-alpha-diazoacetate a new class of reagent is developed for the effective C-H bond functionalization of 1,3-diketones at room temperature. The combination of scandium triflate and propargyl alpha-aryl-alpha-diazoacetate proved to be efficient catalyst-reagent system for the controlled C-H bond functionalization to afford 1,3-dicarbonyl alkylation. The protocol uses inexpensive Sc(OTf)(3) (5 mol%) and the reaction did not require the use of expensive catalysts or ligands and worked efficiently at room temperature. The practicality of the protocol has been demonstrated by the gram scale synthesis. (C) 2019 Elsevier Ltd. All rights reserved.