6974-51-2Relevant academic research and scientific papers
Divergent synthesis of isonitriles and nitriles by palladium- catalyzed benzylic substitution with TMSCN
Hirano, Koji,Miura, Masahiro,Asai, Kento
, p. 12703 - 12714 (2020/11/09)
Ligand-controlled palladium-catalyzed divergent synthesis of isonitriles and nitriles from benzylic carbonates and TMSCN has been developed. The BINAP- or DPEphos-ligated palladium catalyst selectively provides the corresponding benzylic isonitriles, wher
Palladium-Catalyzed Direct α-Arylation of Arylacetonitriles with Aryl Tosylates and Mesylates
Yuen, On Ying,Chen, Xiangmeng,Wu, Junyu,So, Chau Ming
supporting information, p. 1912 - 1916 (2020/03/13)
The first general palladium-catalyzed α-arylation of arylacetonitriles with aryl and heteroaryl sulfonates are reported. Pd(OAc)2 associated with XPhos serves as the effective catalyst to facilitate this reaction. A broad range of electron-rich, -neutral, -deficient, and sterically hindered aryl/heteroaryl tosylates and mesylates are coupled with arylacetonitriles bearing different substituents to give the corresponding products in good to excellent yields. Catalyst loading down to 0.1 mol-% Pd was achieved, and 22 unprecedented compounds were synthesized from 43 demonstrated examples using this method. Its applicability with the modification of biological phenolic compounds was successfully demonstrated. The Pd/XPhos system catalyzed the α-arylation and followed by alkylation in one-pot sequential conditions, resulting in the direct synthesis of compounds containing quaternary center- and deuterium-containing compounds in good to excellent yields.
Palladium-Catalyzed Regiodivergent Substitution of Propargylic Carbonates
Locascio, Theresa M.,Tunge, Jon A.
, p. 18140 - 18146 (2016/12/16)
The palladium(0)-catalyzed, ligand-controlled, regioselective addition of diaryl acetonitrile pronucleophiles to propargylic carbonates is reported. Selective formation of either terminal 1,3-dienyl or propargylated products is proposed to arise from a change in reaction mechanism controlled by the denticity of the coordinating ligand.
