[EN] PIPERIDINE-DIONE DERIVATIVES<br/>[FR] DÉRIVÉS DE PIPÉRIDINE-DIONE
申请人:HOFFMANN LA ROCHE
公开号:WO2015140133A1
公开(公告)日:2015-09-24
The invention provides novel compounds having the general formula (I) and tautomers and pharmaceutically acceptable salts thereof, wherein A1, A2, A3, A4, R1, R4, R5, R6, R7 and R8 are as defined herein, compositions including the compounds and methods of using the compounds.
A mild and simple procedure for the reductive cleavage of acetals and ketals
作者:Adusumilli Srikrishna、Ranganathan Viswajanani
DOI:10.1016/0040-4020(95)00055-d
日期:1995.3
A convenient, mild and simple procedure, employing sodium cyanoborohydride in the presence of either catalytic or stoichiometric amount of boron trifluoride etherate in dry THF, for the reductive cleavage of the acetals and ketals is described.
Efficient addition of alcohols, amines and phenol to unactivated alkenes by AuIII or PdII stabilized by CuCl2
作者:Xin Zhang、Avelino Corma
DOI:10.1039/b714617e
日期:——
The nucleophilic addition of alcohols, amines and phenol to unactivated alkenes catalyzed by cationic gold and palladium becomes limited due to the fast reduction into metallic gold under reaction conditions. The presence of CuCl2 retards the reduction of AuIII and PdII, strongly increasing the turnover number of gold and palladium catalysts. It is shown that new AuIII–CuCl2 and PdII–CuCl2 catalysts
Palladium‐Catalyzed Alkoxycarbonylation of
<i>sec</i>
‐Benzylic Ethers
作者:Carolin Schneider、Ralf Jackstell、Bert U. W. Maes、Matthias Beller
DOI:10.1002/ejoc.201901592
日期:2020.2.28
An alkoxycarbonylation reaction protocol for the synthesis of 3‐arylpropionate esters starting from sec‐benzylic ethers and demonstration of a comparable reaction behavior to established olefin, alcohol, or aryl halide systems.
Effective Au(<scp>iii</scp>)–CuCl<sub>2</sub>-catalyzed addition of alcohols to alkenes
作者:Xin Zhang、Avelino Corma
DOI:10.1039/b706961h
日期:——
Alkenes can be activated by Au(III) catalysts, and the effective addition of alcohols to alkenes can be carried out under mild conditions with Au(III), provided that catalytic amounts of CuCl(2) are added, which significantly stabilize the cationic Au(III).