Ullmann Coupling Reaction of Bicyclic Amidines DBU/DBN with Aryl Halides: A Pathway to the Synthesis of ϵ‐Caprolactam Derivatives

2021 ◽  
Vol 6 (1) ◽  
pp. 5-8
Author(s):  
Gogu V. Surendra Babu ◽  
Aathira Bhaskaran ◽  
Balasubramanian Sridhar ◽  
Tumula Venkateshwar Rao ◽  
Sai Prathima Parvathaneni
Keyword(s):  
Coupling Reaction ◽  
Aryl Halides ◽  
Ullmann Coupling

scholarly journals Mild Method for Ullmann Coupling Reaction of Amines and Aryl Halides.

ChemInform ◽  
2003 ◽  
Vol 34 (48) ◽  
Author(s):  
Dawei Ma ◽  
Qian Cai ◽  
Hui Zhang
Keyword(s):  
Coupling Reaction ◽  
Aryl Halides ◽  
Ullmann Coupling

ChemInform Abstract: Synthesis of 2-Arylamino-1,3,5-triazines from 2-Aminotriazines with Aryl Halides via CuI-Catalyzed Ullmann Coupling Reaction.

ChemInform ◽  
2016 ◽  
Vol 47 (52) ◽  
Author(s):  
Jin Li ◽  
Kong Wu ◽  
Wei Zhou ◽  
Hong Wang ◽  
Dong-Mei Cui ◽  
...  
Keyword(s):  
Coupling Reaction ◽  
Aryl Halides ◽  
Ullmann Coupling

scholarly journals Synthesis of Mono- and Bis-Pyrazoles Bearing Flexible p-Tolyl Ether and Rigid Xanthene Backbones, and Their Potential as Ligands in the Pd-Catalysed Suzuki–Miyaura Cross-Coupling Reaction

Catalysts ◽  
2019 ◽  
Vol 9 (9) ◽  
pp. 718
Author(s):  
Zahid Hussain ◽  
Cristiane Schwalm ◽  
Raoní Rambo ◽  
Renieidy Dias ◽  
Rafael Stieler ◽  
...  
Keyword(s):  
Catalytic System ◽  
Good Yield ◽  
Coupling Reaction ◽  
Cross Coupling ◽  
Boronic Acids ◽  
Aryl Halides ◽  
Tert Butyl ◽  
Cross Coupling Reaction ◽  
Ullmann Coupling

The present work describes the synthesis of mono- and bis-pyrazole compounds bearing flexible p-tolyl ether and rigid 4,5-dibromo-2,7-di-tert-butyl-9,9-dimethyl-9H-xanthene backbones as pyrazolyl analogues of DPEphos and Xantphos ligands, respectively. The synthesis of new pyrazolyl analogues was accomplished following an Ullmann coupling protocol, and the resulting products were isolated in overall good yields. In addition, a hybrid imidazolyl–pyrazolyl analogue bearing a xanthene backbone was synthesized using the same protocol, whereas a hybrid selanyl–pyrazolyl analogue with a xanthene backbone was synthesized in a good yield employing a second C–H activation step. The symmetrical bis-pyrazolyl and the hybrid imidazolyl–pyrazolyl analogues were found to be the most active among the new ligands evaluated in the Pd-catalysed Suzuki-Miyaura cross-coupling of aryl halides with aryl boronic acids. A simple catalytic system based on Pd(OAc)2/2a was developed, which efficiently catalyses the Suzuki–Miyaura reaction of aryl halides and aryl boronic acids and provides moderate to excellent yields of the corresponding cross-coupling products.

Mild Method for Ullmann Coupling Reaction of Amines and Aryl Halides

2003 ◽  
Vol 5 (14) ◽  
pp. 2453-2455 ◽  
Author(s):  
Dawei Ma ◽  
Qian Cai ◽  
Hui Zhang
Keyword(s):  
Coupling Reaction ◽  
Aryl Halides ◽  
Ullmann Coupling

Synthesis of 2-Arylamino-1,3,5-triazines from 2-Aminotriazines with Aryl Halides via CuI-Catalyzed Ullmann Coupling Reaction

Synlett ◽  
2016 ◽  
Vol 27 (13) ◽  
pp. 1993-1996 ◽  
Author(s):  
Dong-Mei Cui ◽  
Chen Zhang ◽  
Jin Li ◽  
Kong Wu ◽  
Wei Zhou ◽  
...  
Keyword(s):  
Coupling Reaction ◽  
Aryl Halides ◽  
Ullmann Coupling
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