artificial catalysts for asymmetric synthesis. Polyfunctional catalysts are considered to be a promising tool for achieving excellent catalytic efficiency. A polyfunctional catalyst system was developed, which incorporates two Lewisacidic/Brønsted basic cobalt centers in combination with triazolium moieties that are crucial for high reactivity and excellent stereoselectivity in the direct1,4‐addition of
This communication describes the utility of β-amido allylboronate as a nucleophile in the catalytic amide allylation of N-carbonyl imides. The reaction of the imide substrates with the boronates has been accomplished by using catalytic zinc bromide and basic additives (ethanol, potassium carbonate and 18-crown 6-ether), affording azaspiro-γ-lactones through a ring opening-reclosure process with yields
[EN] MONOACYLGLYCEROL LIPASE MODULATORS<br/>[FR] MODULATEURS DE LA MONOACYLGLYCÉROL LIPASE
申请人:JANSSEN PHARMACEUTICA NV
公开号:WO2021160602A1
公开(公告)日:2021-08-19
3.1.0 and 4.1.0 Azabicycle compounds of Formula (I), pharmaceutical compositions containing them, methods of making them, and methods of using them including methods for treating disease states, disorders, and conditions associated with MGL modulation, such as those associated with pain, psychiatric disorders, neurological disorders (including, but not limited to major depressive disorder, treatment resistant depression, anxious depression, bipolar disorder), cancers and eye conditions. Wherein X, Y, R1, R2a, and R2b are defined herein.
Benzylidene succinimides as 3C synthons for the asymmetric tandem Mannich reaction/transamidation of cyclic trifluoromethyl ketimines to obtain F<sub>3</sub>C-containing polycyclic dihydroquinazolinones
taking advantage of benzylidene succinimides as a new class of 3C synthons, a highlydiastereo- and enantioselectivetandem Mannich reaction/transamidation has been established by reacting them with cyclic trifluoromethyl N-acyl ketimines. Using a Cinchona alkaloid-derived squaramide as the catalyst, the tandemreaction proceeded smoothly under mild conditions and afforded a range of F3C-containing
Highly Chemoselective Rauhut–Currier Reaction between Maleimides and Enones and Dual Phosphine-Mediated One-Pot Synthesis of Bicyclic and Polycyclic Skeletons
作者:Rong Zhou、Jianfang Wang、Jia Yu、Zhengjie He
DOI:10.1021/jo401363u
日期:2013.11.1
A highly chemoselective phosphine-catalyzed Rauhut–Currierreaction between maleimides and enones has been realized under very mild conditions, affording the corresponding cross-coupling products in moderate to excellent yields. On the basis of this reaction, an efficient dual phosphine-mediated one-pot synthesis of bicyclic and polycyclic compounds containing a cyclopenta[c]pyrrole skeleton has been
在非常温和的条件下已实现了高度化学选择性的膦催化的马来酰亚胺和烯酮之间的Rauhut-Currier反应,从而以中等至极好的收率提供了相应的交叉偶联产物。在此反应的基础上,据此开发了一种有效的双膦介导的一锅合成含环戊五烯[ c ]吡咯骨架的双环和多环化合物的方法,其特征是分子间Rauhut-Currier反应和分子内Wittig反应的串联序列。