Synthesis of α,α-diaryl nitriles by radical nucleophilic substitution
作者:Tomas C. Tempesti、Adriana B. Pierini、Maria T. Baumgartner
DOI:10.1039/c1nj20699k
日期:——
study shows that the anion of 2-naphthylacetonitrile is substituted selectively at its Cα by aromatic halides, through a radical nucleophilicsubstitution mechanism, to give the corresponding α,α-diaryl nitriles in good yields. The regioselectivity of this ambidentnucleophile changes with the steric hindrance at the radical centre from the aromatic substrate. The selectivity observed was investigated
Divergent Synthesis of Isonitriles and Nitriles by Palladium-Catalyzed Benzylic Substitution with TMSCN
作者:Kento Asai、Koji Hirano、Masahiro Miura
DOI:10.1021/acs.joc.0c01861
日期:2020.10.2
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, whereas their regioisomers, benzylic nitriles, are formed exclusively under phosphine ligand-free conditions. Mechanistic studies reveal that isonitrile
The development of an efficient and straightforward method for cyanation of alcohols is of great value. However, the cyanation of alcohols always requires toxic cyanide sources. Herein, an unprecedented synthetic application of an isonitrile as a safer cyanide source in B(C6F5)3-catalyzed direct cyanation of alcohols is reported. With this approach, a wide range of valuable α-aryl nitriles was synthesized
Aromatic hydroxamic acid compounds, their production and use
申请人:Takeda Chemical Industries, Ltd.
公开号:EP0749957A1
公开(公告)日:1996-12-27
A compound represented by the formula:
wherein Ar1 and Ar2 independently represent an optionally substituted aromatic group; Q represents an optionally substituted divalent aliphatic hydrocarbon group optionally containing O or S; R1 represents H, acyl group, etc.; and X represents an electron-withdrawing group, an optionally substituted aromatic group, a group of the formula:
wherein R2 and R3 independently represent H, acyl group or an optionally substituted hydrocarbon group, etc., etc.; or salts thereof are useful as an excellent anti-neurodegenerative agent.