Selective synthesis of halosilanes from hydrosilanes and utilization for organic synthesis
摘要:
Selective synthesis of halosilanes has been examined. Various types of halosilanes and halohydrosilanes, such as R3SiX, R2SiHX, R2SiX2, RSiH2X, RSiHX2 (X = Cl, Br, F), were obtained by the reactions of the corresponding hydrosilanes with Cu(II)-based reagents selectively in high yields. This method could be also applied to the synthesis of chlorofluorosilanes and chlorohydrogermanes. On the other hand, iodo- and bromosilanes and germanes were obtained by Pd- or Ni-catalyzed hydride-halogen exchange reactions of hydrosilanes with alkyl or allyl halides. Their synthetic applications have been demonstrated by using iodo-and bromosilanes and chlorofluorosilanes. (C) 2003 Elsevier Science B.V. All rights reserved.
Design and Synthesis of Amino Acid Tethered Thiazolones to Screen for Hepatitis C NS5B Polymerase Inhibitors
作者:Yili Ding、Kenneth L. Smith、Chamakura V.N.S. Varaprasad
DOI:10.2174/1570180814666170505121156
日期:2017.10.31
become the targets for HCV chemotherapy. The current treatment involves pegylated interferon-α/ribavirin-based treatment and a combination of direct-acting antivirals. NS5B is a critical enzyme for the replication of HCV RNA and is an interesting target for the screening and design of small molecule inhibitors to interfere in the HCV viral replication. Methods: Screening of a library of compounds in a replicon
Synthesis of Spiro[oxindole-3,2′-pyrrolidine] Derivatives from Benzynes and Azomethine Ylides through 1,3-Dipolar Cycloaddition Reactions
作者:Heesun Ryu、Jeongseob Seo、Haye Min Ko
DOI:10.1021/acs.joc.8b02117
日期:2018.11.16
A novel synthetic strategy employing benzyne and azomethineylides for the construction of spiro[oxindole-3,2′-pyrrolidine] derivatives has been achieved in good yields. The ketimines obtained from the condensation of isatins with CF3CH2NH2 react with benzyne in the presence of weak bases such as TBAF or TBAT. This mild practical 1,3-dipolarcycloaddition provides an efficient route to access biologically
Regiochemistry and stereochemistry of oxirane ring-opening with silyl halides
作者:Michael R. Detty、Mark D. Seidler
DOI:10.1016/s0040-4039(00)87391-8
日期:1982.1
The ring-opening of various styrene and stilbene oxides with silyl halides was examined. The regiochemistry of ring-opening was independent of the silyl halide used, but the stereochemistry of ring-opening was sensitive to both the choice of halide and the steric bulk of groups attached to silicon.