首次有效地实现了镍介导的反式四氢萘并[2,3- b ]呋喃立体选择性合成的级联反应。温和的还原体系可以容易地由廉价且空气稳定的材料产生,并显示出以前很难或不可能通过其他方法获得的取代基的宽位置耐受性。还报道了易于合成新的治疗剂(异)脱氧鬼臼毒素的类似物。另外,公开了固有的底物控制用于环化过程中观察到的独特立体选择性。
Cobalt/Rhodium-Catalyzed Diversified Amidation of Benzocyclobutenols via C–C Cleavage under Catalyst and Condition Control
作者:Xingwei Li、Runze Zhang、Zisong Qi、Junwei Li、Lingheng Kong
DOI:10.1021/acs.orglett.3c01788
日期:2023.7.14
rhodium(III)-catalyzed regio- and chemoselective amidation of benzocyclobutenols has been realized using dioxazolone as the amidating reagent to afford three classes of C–N-coupled products via β-carbon elimination of the benzocyclobutenol. The Co(III)-catalyzed coupling initially afforded an isolable o-(N-acylamino)arylmethyl ketone, which could further cyclize to the corresponding indole derivatives under
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.
Efficient Synthesis of Heterocyle-Fused β-Naphthylamines via Intramolecular Addition to a Cyano Group Initiated by Nucleopalladation of Alkynes
作者:Guoqin Xia、Xiuling Han、Xiyan Lu
DOI:10.1021/ol5031074
日期:2014.12.5
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.