Cu(I)/Chiral Bisoxazoline-Catalyzed Enantioselective Sommelet–Hauser Rearrangement of Sulfonium Ylides
作者:Shu-Sen Li、Jianbo Wang
DOI:10.1021/acs.joc.0c01590
日期:2020.10.2
asymmetric thia-Sommelet–Hauser rearrangement of sulfonium ylides remains a great challenge due to its multistep reaction mechanism involving metal carbene formation, proton transfer, and [2,3]-sigmatropic rearrangement. In particular, the key problem of such reactions is the differentiation of the enantiotopic lone pair electrons of sulfur, which generates the sulfonium ylide intermediate bearing chirality
Cu(I)/Chiral Bisoxazoline‐Catalyzed Enantioselective Doyle‐Kirmse Reaction of Allenyl Sulfides with
<i>α</i>
‐Diazoesters
作者:Kang Wang、Shu‐Sen Li、Jianbo Wang
DOI:10.1002/chem.202200170
日期:2022.4.12
A Cu(I)/chiral bisoxazoline-catalyzed enantioselective Doyle-Kirmse reaction of polyfluoroaryl allenylsulfides with α-diazoesters, generating chiral tertiary homopropargylic sulfides in good enantioselectivities under mild conditions.
Identification of potent and novel small-Molecule inhibitors of caspase-3
作者:Darin A Allen、Phuongly Pham、Ingrid C Choong、Bruce Fahr、Matthew T Burdett、Willard Lew、Warren L DeLano、Eric M Gordon、Joni W Lam、Tom O'Brien、Dennis Lee
DOI:10.1016/j.bmcl.2003.08.024
日期:2003.11
The design and synthesis of a series of novel, reversible, small molecule inhibitors of caspase-3 are described. (C) 2003 Elsevier Ltd. All rights reserved.
Three-Component Synthesis of Isoquinoline Derivatives by a Relay Catalysis with a Single Rhodium(III) Catalyst
作者:Chao Zhou、Jijun Jiang、Jun Wang
DOI:10.1021/acs.orglett.9b01456
日期:2019.7.5
A rhodium(III)-catalyzed one-pot three-component reaction of N-methoxybenzamide, α-diazoester, and alkyne was developed, providing an alternative way to synthesize isoquinoline derivatives. Mechanistically, it is a relay catalysis, and the reaction occurred via successive O-alkylation and C–H activation processes, both of which were promoted by the same catalyst.
Efficient Synthesis of α-Aryl Esters by Room-Temperature Palladium-Catalyzed Coupling of Aryl Halides with Ester Enolates
作者:Morten Jørgensen、Sunwoo Lee、Xiaoxiang Liu、Joanna P. Wolkowski、John F. Hartwig
DOI:10.1021/ja027643u
日期:2002.10.1
arylation of alpha,alpha-disubstituted esters were developed with LiNCy(2) as base and P(t-Bu)(3) as ligand. In addition, tert-butyl esters, such as those of Naproxen and Flurbiprofen, were prepared from tert-butyl propionate and aryl bromides in high yields in the presence of Pd(dba)(2) and the hindered, saturatedheterocycliccarbene ligand precursor.