Hydrogen-Bond-Directed Highly Stereoselective Synthesis of Z-Enamides via Pd-Catalyzed Oxidative Amidation of Conjugated Olefins
作者:Ji Min Lee、Doo-Sik Ahn、Doo Young Jung、Junseung Lee、Youngkyu Do、Sang Kyu Kim、Sukbok Chang
DOI:10.1021/ja0639315
日期:2006.10.1
amidation reaction has a broad substrate scope, allowing alkyl, aryl, and vinyl amides to react with olefins conjugated with ester, amide, phosphonate, and ketone groups. The notable preference for the formation of Z-enamides is presumably due to the presence of an intramolecular hydrogen bond between the amido proton and the carbonyl oxygen. The energy difference between two plausible sigma-alkylamidopalladium
Stereoselective Synthesis of Enamides by Pd-Catalyzed Hydroamidation of Electron Deficient Terminal Alkynes
作者:Niranjan Panda、Raghavender Mothkuri
DOI:10.1021/jo301772f
日期:2012.10.19
Hydroamidation of electron-deficient terminal alkynes by amides in presence of Pd catalyst has been exploited for the stereoselective synthesis of Z-enamides. The possible intramolecular hydrogen bonding between the amido proton and carbonyl oxygen of ester group provides the extra stability to the Z-isomer of vinyl palladium complex, which subsequently undergoes protodepalladation and leads to the Z-enamide selectively. This process is found to be mild and operationally simple with broad substrate scope.
[EN] INHIBITORS OF BRUTON'S TYROSINE KINASE AND METHODS OF THEIR USE<br/>[FR] INHIBITEURS DE TYROSINE KINASE DE BRUTON ET LEURS PROCÉDÉS D'UTILISATION
申请人:JANSSEN PHARMACEUTICA NV
公开号:WO2018103058A1
公开(公告)日:2018-06-14
Compounds of formula (I') and methods of their use and preparation, as well as compositions comprising compounds of formula (I').
公式(I')的化合物及其使用和制备方法,以及包含公式(I')化合物的组合物。
Development of a new class of C1-symmetric bisphosphine ligands for rhodium-catalyzed asymmetric hydrogenation
作者:Qian Dai、Wei Li、Xumu Zhang
DOI:10.1016/j.tet.2008.03.110
日期:2008.7
A newclass of C1-symmetric bisphosphine ligands with three hindered quadrants have been obtained through facile synthesis from chiral BINOL derivatives. Their rhodium complexes have exhibited high enantioselectivities (up to 98% ee) in the asymmetric hydrogenation of various unsaturated prochiral olefins, providing an efficient catalytic system for the enantioselective synthesis of chiral amino acids