A modular approach to the bisbenzylisoquinoline alkaloids tetrandrine and isotetrandrine

2020 ◽  
Vol 18 (16) ◽  
pp. 3047-3068 ◽  
Author(s):  
Ramona Schütz ◽  
Maximilian Meixner ◽  
Iris Antes ◽  
Franz Bracher
Keyword(s):  
Modular Approach ◽  
Diaryl Ether ◽  
Bisbenzylisoquinoline Alkaloids ◽  
Ether Synthesis

A modular short-step synthesis of the bisbenzylisoquinoline alkaloids tetrandrine and isotetrandrine was developed employing N-acyl-Pictet–Spengler reaction and Ullman diaryl ether synthesis as central steps.

ChemInform Abstract: Diaryl Ether Synthesis in Supercritical Carbon Dioxide in Batch and Continuous Flow Modes.

ChemInform ◽  
2009 ◽  
Vol 40 (8) ◽  
Author(s):  
Jin-Kyun Lee ◽  
Matthew J. Fuchter ◽  
Rachel M. Williamson ◽  
Gary A. Leeke ◽  
Edward J. Bush ◽  
...  
Keyword(s):  
Carbon Dioxide ◽  
Supercritical Carbon Dioxide ◽  
Continuous Flow ◽  
Diaryl Ether ◽  
Ether Synthesis ◽  
Supercritical Carbon

An efficient catalyst system for diaryl ether synthesis from aryl chlorides

2005 ◽  
Vol 46 (18) ◽  
pp. 3237-3240 ◽  
Author(s):  
Surendra Harkal ◽  
Kamal Kumar ◽  
Dirk Michalik ◽  
Alexander Zapf ◽  
Ralf Jackstell ◽  
...  
Keyword(s):  
Catalyst System ◽  
Efficient Catalyst ◽  
Aryl Chlorides ◽  
Diaryl Ether ◽  
Ether Synthesis

CuI–USY as a Ligand-Free and Recyclable Catalytic System for the Ullmann-Type Diaryl Ether Synthesis

2015 ◽  
Vol 17 (18) ◽  
pp. 4494-4497 ◽  
Author(s):  
Valentin Magné ◽  
Tony Garnier ◽  
Mathieu Danel ◽  
Patrick Pale ◽  
Stefan Chassaing
Keyword(s):  
Catalytic System ◽  
Diaryl Ether ◽  
Ligand Free ◽  
Ether Synthesis

Diaryl ether synthesis in supercritical carbon dioxide in batch and continuous flow modes

2008 ◽  
pp. 4780 ◽  
Author(s):  
Jin-Kyun Lee ◽  
Matthew J. Fuchter ◽  
Rachel M. Williamson ◽  
Gary A. Leeke ◽  
Edward J. Bush ◽  
...  
Keyword(s):  
Carbon Dioxide ◽  
Supercritical Carbon Dioxide ◽  
Continuous Flow ◽  
Diaryl Ether ◽  
Ether Synthesis ◽  
Supercritical Carbon

scholarly journals Screening of ligands for the Ullmann synthesis of electron-rich diaryl ethers

2012 ◽  
Vol 8 ◽  
pp. 1105-1111 ◽  
Author(s):  
Nicola Otto ◽  
Till Opatz
Keyword(s):  
Low Temperatures ◽  
Potassium Phosphate ◽  
Model System ◽  
Multidentate Ligands ◽  
Copper Iodide ◽  
Structural Class ◽  
Diaryl Ethers ◽  
Aryl Bromides ◽  
Diaryl Ether ◽  
Ether Synthesis

In the search for new ligands for the Ullmann diaryl ether synthesis, permitting the coupling of electron-rich aryl bromides at relatively low temperatures, 56 structurally diverse multidentate ligands were screened in a model system that uses copper iodide in acetonitrile with potassium phosphate as the base. The ligands differed largely in their performance, but no privileged structural class could be identified.

Utilization of a copper-catalyzed diaryl ether synthesis for the preparation of verbenachalcone

Tetrahedron ◽  
2002 ◽  
Vol 58 (39) ◽  
pp. 7903-7910 ◽  
Author(s):  
Xuechao Xing ◽  
Deepa Padmanaban ◽  
Li-An Yeh ◽  
Gregory D Cuny
Keyword(s):  
Diaryl Ether ◽  
Ether Synthesis

ChemInform Abstract: Efficient Catalytic Activity of Copper/Aluminum Hydrotalcite in Diaryl Ether Synthesis.

ChemInform ◽  
2009 ◽  
Vol 40 (23) ◽  
Author(s):  
B. Sreedhar ◽  
R. Arundhathi ◽  
M. Amarnath Reddy ◽  
M. Lakshmi Kantam
Keyword(s):  
Catalytic Activity ◽  
Diaryl Ether ◽  
Copper Aluminum ◽  
Ether Synthesis
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