Redox-Neutral Copper(II) Carboxylate Catalyzed α-Alkynylation of Amines
作者:Deepankar Das、Aaron X. Sun、Daniel Seidel
DOI:10.1002/anie.201300021
日期:2013.3.25
Cocktail of three: A new strategy for iminium ion isomerization was applied to the direct, redox‐neutralα‐alkynylation of amines. Copper(II) 2‐ethylhexanoate [Cu(2‐EH)2] was identified as the optimal catalyst for this three‐component coupling reaction of secondary amines, aldehydes, and alkynes. MW=microwave.
A procedure‐economical synthesis of 2,6‐trans‐substituted piperidinealkaloids is described. The method consists of Ir and Cu catalyzed reductive alkynylation of N‐benzyllactams and tandem catalytic hydrogenation‐hydrogenolysis.
Copper-catalyzed aerobic decarboxylative coupling between cyclic α-amino acids and diverse C–H nucleophiles with low catalyst loading
作者:Jing Guo、Ying Xie、Qiao-Lei Wu、Wen-Tian Zeng、Albert S. C. Chan、Jiang Weng、Gui Lu
DOI:10.1039/c8ra02340a
日期:——
An aerobic decarboxylative cross-coupling of α-aminoacids with diverse C–H nucleophiles has been realized using Cu2(OH)2CO3 (1 mol%) as the catalyst under air. This protocol enables highly efficient formation of various C(sp3)–C(sp3), C(sp3)–C(sp2) and C(sp3)–C(sp) bonds under simple conditions without the use of any ligand or extra oxidant, providing a practical approach to numerous nitrogen-containing
Recyclable Copper-Catalyzed Decarboxylative C–C Coupling of the sp3-Hybridized Carbon Atoms of α-Amino Acids
作者:Ruonan Zhao、Jianying Li、Bin Huang、Mingzhong Cai
DOI:10.1007/s10562-022-03936-1
日期:2023.1
A highly efficient heterogeneous copper(I)-catalyzeddecarboxylative C–C coupling of α-amino acids with various carbon nucleophiles has been developed that proceeds smoothly in toluene at 110 °C by using an 2-aminoethylamino-modified SBA-15-supported copper(I) bromide complex as the catalyst and di-tert-butyl peroxide as the oxidant and provides a novel and practical approach for the synthesis of diverse