Palladium(II) Catalyzed Carboxylation of Aromatic Compounds with CO under Very Mild Conditions

1995 ◽  
Vol 24 (5) ◽  
pp. 345-346 ◽  
Author(s):  
Yuki Taniguchi ◽  
Yoshinori Yamaoka ◽  
Kazuyuki Nakata ◽  
Ken Takaki ◽  
Yuzo Fujiwara
Keyword(s):  
Aromatic Compounds ◽  
Mild Conditions

Visible-Light-Induced Radical Polynitration of Arylboronic Acids: Synthesis of Polynitrophenols

Synthesis ◽  
2018 ◽  
Vol 50 (15) ◽  
pp. 2891-2896 ◽  
Author(s):  
Jinna Song ◽  
Xihe Bi ◽  
Qi Zhang ◽  
Kaki Raveendra Babu ◽  
Zhouliang Huang
Keyword(s):  
Visible Light ◽  
Aromatic Compounds ◽  
Functional Group ◽  
Simple Procedure ◽  
One Pot ◽  
Arylboronic Acids ◽  
Mild Conditions ◽  
Conventional Methods ◽  
Straightforward Approach

We report a visible light-assisted one-pot method for the synthesis of polynitrophenols through radical tandem hydroxylation and nitration of arylboronic acids by utilizing copper(II) nitrate tri­hydrate as the nitro source. This method features mild conditions, a simple procedure, and good functional group tolerance. Compared to conventional methods, this work provides a straightforward approach for the polynitration of aromatic compounds.

ChemInform Abstract: Palladium(II) Catalyzed Carboxylation of Aromatic Compounds with CO under Very Mild Conditions.

ChemInform ◽  
2010 ◽  
Vol 26 (41) ◽  
pp. no-no
Author(s):  
Y. TANIGUCHI ◽  
Y. YAMAOKA ◽  
K. NAKATA ◽  
K. TAKAKI ◽  
Y. FUJIWARA
Keyword(s):  
Aromatic Compounds ◽  
Mild Conditions

Cu(II)/vasicine promoted intramolecular C-O formation: synthesis of benzoxazoles in EtOH

2020 ◽  
Vol 17 ◽  
Author(s):  
Minxin Li ◽  
Meiling Li ◽  
Yanling Tang ◽  
Yun Sun ◽  
Lu Qu ◽  
...  
Keyword(s):  
Catalytic System ◽  
Aromatic Compounds ◽  
Bond Formation ◽  
Cross Coupling ◽  
Coupling Reactions ◽  
Mild Conditions ◽  
Cross Coupling Reactions ◽  
High Yields

Aim and Objective: Benzoxazoles are valuable bicyclic aromatic compounds, the construction of benzoxazoles via C-O cross-coupling reactions has attracted more and more attention. Materials and Methods: The best condition of C-O bond formation from o-haloanilides was carried out taking Cu(OTf)2 (5 mol%) and vasicine (10 mol%) as the catalyst in EtOH in present of K2CO3 (2 eq.) for 12 h at 90oC. Results: A series of 2-substituted benzoxazoles have been prepared in high yields from 2-bromoanilides and 2-iodioanilides under mild conditions. Conclusion: We have developed an efficient Cu-vasicine catalytic system for intramolecular C-O bond formation. This strategy is applicable to synthesis of a wide variety of 2-substituted benzoxazoles by intramolecular O-arylation of o-haloanilides.

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