Efficient and recyclable Cu2(BDC)2(BPY)-catalyzed oxidative amidation of terminal alkynes: role of bipyridine ligand

2015 ◽  
Vol 5 (2) ◽  
pp. 851-859 ◽  
Author(s):  
Hanh T. N. Le ◽  
Thuan V. Tran ◽  
Nam T. S. Phan ◽  
Thanh Truong
Keyword(s):  
Efficient Method ◽  
Cross Coupling ◽  
Recyclable Catalyst ◽  
Coupling Reactions ◽  
Terminal Alkynes ◽  
Cross Coupling Reactions ◽  
Bipyridine Ligand ◽  
Oxidative Amidation

We have described an efficient method for oxidative cross coupling reactions between activated N–H amines and terminal alkynes using heterogeneous Cu2(BDC)2(BPY) as recyclable catalyst (BDC = benzene-1,4-dicarboxylate; BPY = 4,4′-bipyridine).

Exploiting the dual role of ethynylbenziodoxolones in gold-catalyzed C(sp)–C(sp) cross-coupling reactions

2017 ◽  
Vol 53 (56) ◽  
pp. 7937-7940 ◽  
Author(s):  
Somsuvra Banerjee ◽  
Nitin T. Patil
Keyword(s):  
Functional Groups ◽  
Catalytic System ◽  
Cross Coupling ◽  
Dual Role ◽  
Coupling Reactions ◽  
Terminal Alkynes ◽  
Cross Coupling Reactions ◽  
Polar Functional Groups ◽  
Transfer Agents

Reported herein is the gold-catalyzed alkynylation of terminal alkynes using ethynylbenziodoxolones (EBXs), where EBXs serve a dual role as oxidants as well as alkyne transfer agents to access unsymmetrical 1,3-diynes. Hence, the catalytic system requires no external oxidants and is compatible with a broad range of substrates, including those with polar functional groups such as NH, OH and B(OH)2.

The syntheses, structures and spectroelectrochemical properties of 6-oxo-verdazyl derivatives bearing surface anchoring groups

2022 ◽  
Author(s):  
Varshini Jayantha Kumar ◽  
Jian-Zhong Wu ◽  
Martyna Judd ◽  
Elodie ROUSSET ◽  
Marcus Korb ◽  
...  
Keyword(s):  
Cross Coupling ◽  
Coupling Reactions ◽  
Terminal Alkynes ◽  
Bearing Surface ◽  
Surface Anchoring ◽  
Verdazyl Radicals ◽  
Cross Coupling Reactions ◽  
Anchoring Groups ◽  
Spectroelectrochemical Properties

A series of 6-oxo verdazyl radicals functionalised at the 1- and 5-positions by methyl, thiomethyl and iodo groups were synthesised using conventional strategies. Facile Sonogashira cross-coupling reactions of terminal alkynes...

Metallic salt-catalyzed direct indium insertion into alkyl iodides and their applications in cross-coupling reactions

2019 ◽  
Vol 6 (3) ◽  
pp. 313-318 ◽  
Author(s):  
Bing-Zhi Chen ◽  
Chuang-Xin Wang ◽  
Zhen-Hua Jing ◽  
Xue-Qiang Chu ◽  
Teck-Peng Loh ◽  
...  
Keyword(s):  
Efficient Method ◽  
Cross Coupling ◽  
Coupling Reactions ◽  
Esi Ms ◽  
Cross Coupling Reactions ◽  
Metallic Salt ◽  
Alkyl Iodides

An efficient method for the synthesis of alkyl indium reagents via an indium(iii) or lead(ii) halide-catalyzed direct insertion of indium into alkyl iodides is developed. NMR and ESI-MS analyses indicated the formation of a mixture of an alkyl indium dihalide (RInX2) and a dialkyl indium halide (R2InX).

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