Access to β-Keto Esters by Palladium-Catalyzed Carbonylative Coupling of Aryl Halides with Monoester Potassium Malonates
作者:Signe Korsager、Dennis U. Nielsen、Rolf H. Taaning、Troels Skrydstrup
DOI:10.1002/anie.201304072
日期:2013.9.9
New tricks for an old dog: The Pd‐catalyzed carbonylative α‐arylation of monoethyl potassiummalonates with aryl bromides and reactive aryl chlorides provides a simple and direct route to aryl β‐ketoesters. Because only stoichiometric amounts of carbon monoxide are employed, the method is ideal for the introduction of carbon isotopes into more complex structures.
A three-component Minisci reaction coupling of 1,3-dicarbonylcompounds with vinyl ethers and quinolines or isoquinolines under visible light is developed. The 1,3-dicarbonylcompound undergoes single-electron oxidation to afford an electrophilic 1,3-dicarbonyl radical under visible light irradiation. Due to the polarity of the free radical, the electrophilic radical adds to the electron-rich olefin
Palladium-Catalyzed C–S Bond Cleavage with Allenoates: Synthesis of Tetrasubstituted 2-Alkenylfuran Derivatives
作者:Quannan Wang、Zhuqing Liu、Jiang Lou、Zhengkun Yu
DOI:10.1021/acs.orglett.8b02253
日期:2018.10.5
Palladium-catalyzed C–S cleavage of tetrasubstituted internal alkene α-oxo ketene dithioacetals was realized with allenoates as the coupling partners, efficiently affording tetrasubstituted 2-alkenylfuran derivatives with excellent regioselectivity under mild conditions. Allenoates acted as C1 synthons in the desulfurative [4 + 1] annulation.
meso-dicarbonatecyclohexene with β-hydrazino carboxylic esters has been achieved via a RuPHOX/Pd-catalyzed allylic substitution cascade for the construction of chiral hexahydrocinnoline derivatives with high performance. Mechanistic studies reveal that the reaction exploits a pathway different from that of our previous work and that the first nitrogen nucleophilic process is the rate-determining step. The protocol
[EN] SUBSTITUTED 1-AMINO-1H-IMIDAZOLE-5-CARBOXAMIDE AS BRUTON'S TYROSINE KINASE INHIBITORS<br/>[FR] 1-AMINO-1H-IMIDAZOLE-5-CARBOXAMIDE SUBSTITUÉ UTILISÉ EN TANT QU'INHIBITEURS DE LA TYROSINE KINASE DE BRUTON
申请人:UNIV HENAN NORMAL
公开号:WO2020228637A1
公开(公告)日:2020-11-19
Disclosed is a compound of formula I or a pharmaceutically acceptable salt, active metabolite, tautomer, stereoisomer, or prodrug thereof as BTK (Bruton's Tyrosine Kinase) inhibitors, which is useful for the treatment of autoimmune disease, inflammatory disease, cancer and potentially allergies.