Synthesis of (
<i>Z</i>
)‐β‐(Carbonylamino)alkenylindium through Regioselective
<i>anti</i>
‐Carboindation of Ynamides and Its Transformation to Multisubstituted Enamides
an anti-addition, which was supported by DFT calculations. The scope of substrates included various ynamides and silylated nucleophiles, such as silyl ketene acetals and silyl ketene imines. The transformation of synthesized alkenylindiums by iodination, radical coupling, and Pd-catalyzed cross-coupling successfully afforded trisubstituted enamines with high regio- and stereoselectivities.
[EN] RENIN INHIBITORS<br/>[FR] INHIBITEURS DE LA RÉNINE
申请人:MERCK FROSST CANADA LTD
公开号:WO2009023964A1
公开(公告)日:2009-02-26
The present invention relates to biphenyl compounds of formula (I). These compounds are renin inhibitors of a non- peptidic nature and of low molecular weight. The invention further relates to a pharmaceutical composition containing said compounds, as well as their use and method of treatment of cardiovascular events and renal insufficiency.
C–H Amination via Electrophotocatalytic Ritter-type Reaction
作者:Tao Shen、Tristan H. Lambert
DOI:10.1021/jacs.1c03718
日期:2021.6.16
A method for C–H bond amination via an electrophotocatalytic Ritter-type reaction is described. The reaction is catalyzed by a trisaminocyclopropenium (TAC) ion in an electrochemical cell under irradiation. These conditions convert benzylic C–H bonds to acetamides without the use of a stoichiometric chemical oxidant. A range of functionality is shown to be compatible with this transformation, and several
Chemistry of Unprotected Amino Acids in Aqueous Solution: Direct Bromination of Aromatic Amino Acids with Bromoisocyanuric Acid Sodium Salt under Strong Acidic Condition
Brominations of unprotected aromatic amino acids such as phenylalanine, tyrosine, and glycine, with bromoisocyanuric acid mono sodium salt (BICA-Na) were conducted in 60% aq. H(2)SO(4) at 0 degrees C to give a mixture of mono-brominated products in good yield. Unexpectedly, meta-bromophenylglycine was obtained as main product accompanied by ortho- and para-substituted products, while phenylalanine
A mild, efficient electrochemical approach to the site-selective direct C-H amidation of benzene and its derivatives with acetonitrile and benzonitrile has been developed. It has been shown that joint electrochemical oxidation of various arenes in the presence of a copper salt as a catalyst and nitriles leads to the formation of N-phenylacetamide from benzene and N-benzylacetamides from benzyl derivatives