Efficient Synthesis of Heterocyle-Fused β-Naphthylamines via Intramolecular Addition to a Cyano Group Initiated by Nucleopalladation of Alkynes
摘要:
A palladium(II)-catalyzed efficient synthesis of heterocycle-fused beta-naphthylamines was accomplished via nucleophilic addition of a carbonpalladium bond to the intramolecular cyano group initiated by nucleopalladation (oxypalladation or aminopalladation) of alkynes.
Expedient Drug Synthesis and Diversification via ortho-C−H Iodination using Recyclable PdI<sub>2</sub> as the Precatalyst
作者:Tian-Sheng Mei、Dong-Hui Wang、Jin-Quan Yu
DOI:10.1021/ol1010483
日期:2010.7.16
Pd(II)-catalyzed ortho-C H iodination reactions of phenylacetic acid substrates have been achieved using recyclable Pdl(2) as the precatalyst. This class of substrates is incompatible with the classic amide formation/ortho-lithiation/iodination sequence. The power of this new technology is demonstrated by facile drug functionalization and drastically shortened syntheses of the drugs diclofenac and lumiracoxib.