C-H insertion. By employing chiral diphenylethylene diamine (dpen) as ligands bearing electron-withdrawing arylsulfonyl substituents, the reactions occur with remarkable chemo- and enantioselectivities; the competing Curtius-type rearrangement was largely suppressed. Enantioselective nitreneinsertion to allylic/propargylic C-H bonds was also achieved with remarkable tolerance to the C═C and C≡C bonds
Stereodivergent Alkyne Hydrofluorination Using Protic Tetrafluoroborates as Tunable Reagents
作者:Rui Guo、Xiaotian Qi、Hengye Xiang、Paul Geaneotes、Ruihan Wang、Peng Liu、Yi‐Ming Wang
DOI:10.1002/anie.202006278
日期:2020.9.14
available precursors remains a synthetic challenge. The metal‐free hydrofluorination of alkynes constitutes an attractive though elusive strategy for their preparation. Introduced here is an inexpensive and easily handled reagent that enables the development of simple and scalable protocols for the regioselective hydrofluorination of alkynes to access both the E and Z isomers of vinyl fluorides. These
Discovery of a Potent, Selective, and Efficacious Class of Reversible α-Ketoheterocycle Inhibitors of Fatty Acid Amide Hydrolase Effective as Analgesics
作者:Dale L. Boger、Hiroshi Miyauchi、Wu Du、Christophe Hardouin、Robert A. Fecik、Heng Cheng、Inkyu Hwang、Michael P. Hedrick、Donmienne Leung、Orlando Acevedo、Cristiano R. W. Guimarães、William L. Jorgensen、Benjamin F. Cravatt
DOI:10.1021/jm049614v
日期:2005.3.1
Herein we report the discovery of a potent, selective, and efficacious class of reversible FAAH inhibitors that produce analgesia in animal models validating a new therapeutic target for pain intervention. Key to the useful inhibitordiscovery was the routine implementation of a proteomics-wide selectivity screen against the serine hydrolase superfamily ensuring selectivity for FAAH coupled with systematic
react with alkynoic acids (AAs) to achieve gold‐catalyzed highly selective cascade reactions to furnish novel indole‐fused skeletons. Furthermore, with this powerful gold catalytic system, a library of indole/pyrrole/thiophene/benzene/naphthalene/pyridine‐based nitrogen‐containing heterocyclic compounds (NCHCs) with scaffold diversity and molecular complexity was constructed rapidly using various amine
Silver-catalyzed intramolecular hydroamination of alkynes in aqueous media: efficient and regioselective synthesis for fused benzimidazoles
作者:Xu Zhang、Yu Zhou、Hengshuai Wang、Diliang Guo、Deju Ye、Yungen Xu、Hualiang Jiang、Hong Liu
DOI:10.1039/c0gc00668h
日期:——
A simple, convenient and green synthetic approach to diverse fused tricyclic benzimidazoles has been developed by Ag(I) complex catalyzed intramolecular hydroamination under the classic method or by microwave irradiation in water. This strategy presents an operationally simple and environmentally friendly transformation, in which various substituted benzimidazoles facilitated efficient cyclization