Palladium-Catalyzed Mono-α-Arylation of Acetone with Aryl Imidazolylsulfonates
作者:Lutz Ackermann、Vaibhav P. Mehta
DOI:10.1002/chem.201201394
日期:2012.8.13
Set the ace(tone): A palladium catalyst derived from the bidentate XantPhos ligand and Pd(OAc)2 has enabled broadly applicable mono‐α‐arylations of acetone to be performed with air‐ and moisture‐stable arylimidazolylsulfonates as most user‐friendly electrophiles (see scheme).
Ketone Synthesis from Benzyldiboronates and Esters: Leveraging α-Boryl Carbanions for Carbon–Carbon Bond Formation
作者:Boran Lee、Paul J. Chirik
DOI:10.1021/jacs.9b11944
日期:2020.2.5
method for the synthesis of ketones from readily available esters and benzyldiboronates is described. The synthetic method is compatible with a host of sterically differentiated alkyl groups, alkenes, acidic protons, amides and aryl rings having common organic functional groups. With esters bearing α-stereocenters, high enantiomeric excess was maintained during ketoneformation, establishing minimal competing
Compounds of the formula (I) are disclosed which are vitronectin receptor antagonists and are useful in the treatment of osteoporosis:
wherein
R
1
is Het or Ar
R
2
is
or a pharmaceutically acceptable salt thereof.
UREIDE DERIVATIVE AND PHARMACEUTICAL APPLICATION THEREOF
申请人:Sugawara Yuji
公开号:US20100234395A1
公开(公告)日:2010-09-16
Discloses is a pharmaceutical agent comprising an ureide derivative represented by the formula: or a pharmaceutically acceptable salt thereof as an active ingredient. The ureide derivative or the pharmaceutically acceptable salt thereof is useful for the relief of a pain or the treatment or prevention of neurogenic pain.
Bromine radical-enhanced HAT activity leading to stoichiometric couplings of methylarenes with acid chlorides
作者:Qiao-Lin Wang、Huawen Huang、Guojiang Mao、Guo-Jun Deng
DOI:10.1039/d2gc02972c
日期:——
The stoichiometric coupling of readily available methylarenes and diverse acid chlorides into α-aryl ketones, a valued structural motif present in pharmacologically relevant molecules, has been developed. The utility of this protocol is demonstrated by the late-stage acylation of biologically active molecules in a stoichiometric manner. Mechanistic investigation reveals that the photocatalytically