The mono ortho-bromination of phenolic building blocks by NBS has been achieved in short reaction times (15-20 min) using ACS-grade methanol as a solvent. The reactions can be conducted on phenol, naphthol and biphenol substrates, giving yields of >86% on gram scale. Excellent selectivity for the desired mono ortho-brominated products is achieved in the presence of 10 mol % para-TsOH, and the reaction
ortho‐selective nucleophilicaddition reaction of amines to 3‐substituted benzynes has been achieved. Despite a large trimethylsilyl substituent, primary amines attack the C2 position of 3‐silylbenzynes to produce 2‐silylanilines (see scheme). This outcome is likely to result from the inductive electron‐donating effect of the silyl group, which overrides its steric repulsion with the approaching amines.
申请人:National Technology & Engineering Solutions of Sandia, LLC
公开号:US11197854B1
公开(公告)日:2021-12-14
The present invention relates to methods for identifying candidate therapeutics for a disease caused by a viral envelope protein. In particular, the method can include contacting a test envelope protein with the candidate and determining its activity.
Raiford; Colbert, Journal of the American Chemical Society, 1925, vol. 47, p. 1456
作者:Raiford、Colbert
DOI:——
日期:——
Synthesis of Biaryl Compounds through Three-Component Assembly: Ambidentate Effect of the<i>tert</i>-Butyldimethylsilyl Group for Regioselective Diels-Alder and Hiyama Coupling Reactions
作者:Shuji Akai、Takashi Ikawa、Sho-ichi Takayanagi、Yuki Morikawa、Shinya Mohri、Masaya Tsubakiyama、Masahiro Egi、Yasufumi Wada、Yasuyuki Kita