Mild and efficient catalytic method for α-trimethylsilyl ketones
作者:Chunrui Sun、Jingwei Li、Silviya Demerzhan、Daesung Lee
DOI:10.3998/ark.5550190.0012.403
日期:——
A mild, efficient and convenient method for the synthesis of α-silyl ketones from corresponding aldehydes and trimethylsilyldiazomethane in the presence of a catalytic amount of indium(III) chloride has been developed.
Amidyl Radical Directed Remote Allylation of Unactivated sp
<sup>3</sup>
C−H Bonds by Organic Photoredox Catalysis
作者:Kui Wu、Lushun Wang、Sonivette Colón‐Rodríguez、Gerd‐Uwe Flechsig、Ting Wang
DOI:10.1002/anie.201811004
日期:2019.2.4
visible‐light‐mediated allylation of unactivated sp3 C−H bonds is reported. The remote allylation was directed by the amidyl radical, which was generated by photocatalytic fragmentation of a pre‐functionalized amide precursor. Both aromatic and aliphatic amide derivatives could successfully deliver the remote C−H allylation products in good yields. A variety of electron deficient allylsulfone systems could
[EN] DERIVATIVES OF BENZOTHIAZINES, PREPARATION THEREOF AND APPLICATION THEREOF AS DRUGS<br/>[FR] DÉRIVÉS DES BENZOTHIAZINES, LEUR PRÉPARATION ET LEUR APPLICATION EN TANT QUE MÉDICAMENTS
申请人:PF MEDICAMENT
公开号:WO2010100139A1
公开(公告)日:2010-09-10
The object of the present invention is benzothiazine derivatives having the capability of inhibiting 11β-HSD1 not only at an enzymatic level but also at a cell level. The compounds of the present invention are of general formula (I). Wherein notably R1 represents a hydrogen or OR1 represents an ester or an ether. R2 represents a naphthyl or a 1, 2, 3, 4-tetrahydro-naphthalene or a biphenyl or phenyl pyridine or a substituted phenyl. R3 represents a methyl or ethyl; R4 and R'4 represent a hydrogen.
Enantioselective alpha-fluorination of aldehydes using chiral organic catalysts
申请人:MacMillan W.C. David
公开号:US20060189830A1
公开(公告)日:2006-08-24
Nonmetallic, chiral organic catalysts are used to catalyze enantioselective fluorination of enolizable aldehydes. Reaction systems composed of an enolizable aldehyde, an electrophilic fluorination reagent, and a nonmetallic chiral catalyst in the form of an imidazolidinone salt are also provided.