38695-26-0Relevant articles and documents
Palladium-catalyzed cross-coupling of benzyltitanium(IV) reagents with aryl fluorides
Li, Yan
, (2022/01/11)
The first palladium-catalyzed cross-coupling between benzyltitanium(IV) reagents with aryl fluorides is reported. A variety of diarylmethanes can be prepared in good to excellent yields by the catalyst system of PdCl2(dppf)2 associated with 1-[2-(di-tert-butylphosphanyl)phenyl]-4-methoxypiperidine. This reaction offered a highly efficient approach to diarylmethanes that are commonly found in life-changing drug molecules. Graphical abstract: [Figure not available: see fulltext.]
Method for synthesizing diaryl methane derivative
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Paragraph 0013; 0040-0041, (2021/09/21)
The invention aims to provide a method for synthesizing a diaryl methane derivative. The method is characterized in that tris (dibenzylideneacetone) dipalladium is used as a catalyst, an organic antimony compound is used as a nucleophilic reagent, benzyl bromide and benzyl chloride are used as electrophilic reagents, toluene is used as a solvent, and the diaryl methane derivative is synthesized through direct cross coupling under the air atmosphere condition. The method has the characteristics of good substrate universality, good functional group tolerance, simplicity and convenience in operation and the like.
Ligand-Facilitated Reductive Coupling of Benzyl Chlorides with Aryl Chlorides Catalyzed by Well-Defined Heteroleptic Ni (II)-NHC Complexes
Lu, Gusheng,Li, Ruipeng,Shen, Zhengwang,Wu, Qinjia,Sun, Hongmei
, (2020/06/01)
Novel heteroleptic Ni (II) complexes bearing a highly hindered yet flexible IPr* ligand, Ni (IPr*)(PPh3)Br2 (1) and Ni (IPr*)(PCy3)Br2 (2) (IPr* = 1,3-bis(2,6-bis (diphenylmethyl)-4-methylphenyl)imidazol-2-ylidene), were easily prepared in 78percent and 89percent yield, respectively. Both were characterized by elemental analysis and NMR spectroscopy, and 1 was subjected to X-ray crystallography. Compared with 2 and its analogue bearing a less sterically demanding IPr ligand (IPr = 1,3-bis(2,6-diisopropylphenyl)imidazol-2-ylidene), complex 1 exhibited superior catalytic activity in the magnesium-mediated reductive coupling of benzyl chlorides with aryl chlorides, featuring outstanding tolerance of both coupling partners with steric demand. This study discloses a ligand-facilitated reductive coupling of benzyl chlorides with aryl chlorides, which provides a new and practical synthetic tool for the synthesis of diarylmethanes.