82721-04-8Relevant articles and documents
Aromatic ether compound or the sulfhydryl compound
-
Paragraph 0083-0084; 0099-0100; 0109, (2021/11/19)
[Problem] Aromatic ether compounds and aromatic sulfide compound of this new technology to[Solution] In general formula (1a), (1b), (1c) palladium or nickel compound or a phosphine compound represented by the compound comprising a transition metal compound in the presence of a transition metal catalyst, (A1) is represented by compounds having hydroxy carbon C a-OH or (A2) with a compound represented by the sulfhydryl carbon C a-SH, nitro group (- NO2 ) To react with an aromatic nitro compound (B), (A1) to the compound of the aromatic nitro compound (C1) or the reaction product of an aromatic ether compounds (B) hetero coupling (A2) of the compounds of the reaction product of an aromatic sulfide compound of an aromatic nitro compound (C2) generating (B) hetero coupling characterized by comprising the step of, aromatic ether compounds or aromatic sulfide compound. [Drawing] no
Pd-Catalyzed Etherification of Nitroarenes
Matsushita, Naoki,Kashihara, Myuto,Formica, Michele,Nakao, Yoshiaki
supporting information, p. 2209 - 2214 (2021/07/20)
The Pd-catalyzed etherification of nitroarenes with arenols has been achieved using a new rationally designed ligand. Mechanistic insights were used to design the ligand so that both the oxidative addition and reductive elimination steps of a plausible catalytic cycle were facilitated. The catalytic system established here provides direct access to a range of unsymmetrical diaryl ethers from nitroarenes.
Magnetically recyclable nano copper/chitosan in O-arylation of phenols with aryl halides
Mousavi Mashhadi, Seyed Ali,Kassaee, Mohamad Z.,Eidi, Esmaiel
, (2019/07/04)
Interaction of chitosan (CS) with Fe3O4, followed by embedding Cu nanoparticles (NPs) on the magnetic surface through adsorption of Cu2+, and its reduction to Cuo via NaBH4, offers a reusable efficient catalyst (Fe3O4/CS-Cu NPs) that is employed in cross-coupling reactions of aryl halides with phenols, which affords the corresponding diaryl ethers, with good to excellent yields. The catalyst is completely recoverable from the reaction mixture by using an external magnet. It can be reused four times, without significant loss in its catalytic activity.
Low catalyst loadings for copper-catalyzed O-arylation of phenols with aryl and heteroaryl halides under mild conditions
Yong, Fui-Fong,Teo, Yong-Chua,Yan, Yaw-Kai,Chua, Guan-Leong
scheme or table, p. 101 - 106 (2012/02/03)
A practical and mild strategy has been developed for the cross-coupling of O-arylation of phenol with differently substituted aryl halides and heteroaryl iodides using low catalyst loading of copper iodide under low operating temperature in DMF with TMHD as the ligand and Cs2CO3 as the base. This method tolerates a variety of functional groups including sterically hindered phenols and heteroaryl iodides to afford products in good to excellent yields (up to 95%). Georg Thieme Verlag Stuttgart. New York.
1,1,1-Tris(hydroxymethyl)ethane as a new, efficient, and versatile tripod ligand for copper-catalyzed cross-coupling reactions of aryl iodides with amides, thiols, and phenols
Chen, Yao-Jung,Chen, Hsin-Hung
, p. 5609 - 5612 (2007/10/03)
1,1,1-Tris(hydroxymethyl)ethane was presented as a new, efficient, and versatile tridentate O-donor ligand suitable for the copper-catalyzed formation of C-N, C-S, and C-O bonds. This inexpensive and commercially available tripod ligand has been demonstrated to facilitate the copper-catalyzed cross-coupling reactions of aryl iodides with amides, thiols, and phenols to afford the corresponding desired products in good to excellent yields.
N,N-Dimethyl Glycine-Promoted Ullmann Coupling Reaction of Phenols and Aryl Halides
Ma, Dawei,Cai, Qian
, p. 3799 - 3802 (2007/10/03)
(Matrix presented) Ullmann-type diaryl ether synthesis can be performed at 90°C using either aryl iodides or aryl bromides as the substrates under the assistance of N,N-dimethylglycine.
Carbamic acid esters
-
, (2008/06/13)
Carbamic acid esters of the formula STR1 wherein R1, R2, R3, R4, R5, R6, R7, X, and Y are as defined hereinafter, process for their preparation, as well as pesticidal compositions containing these compounds as the active ingredient and methods for using the pesticidal compositions for the control of pests are described.
Carbamic acid esters and use as pesticides
-
, (2008/06/13)
Carbamic acid compounds of the formula STR1 wherein R1, R2, R3, R4, R5, R6, X and Y are as hereinafter set forth, processes for their preparation, pesticidal compositions containing one or more of the carbamic acid compounds as the active ingredient and methods for using the pesticidal compositions for the control of pests, particularly insects, mites and nematodes, are described.