Synthesis of α-benzylated amides via electrocatalytic Favorskii rearrangement of 1, 3-diarylacetones
作者:Wei Liu、Wei Huang、Tianlei Lan、Haijuan Qin、Cheng Yang
DOI:10.1016/j.tet.2018.03.033
日期:2018.5
Electrolysis of 1,3-diarylacetones with aliphatic amines in Bu4NI/CH3CN to racemic Favorskii amides via benzyl group rearrangement has been developed. The electroconversion is easily conducted in a simple undivided cell under constant-current conditions at room temperature. The electrocatalytic Favorskiirearrangement of 1,3-diarylacetones including electron-withdrawing substituents was favored and
已开发了通过苄基重排将1,3-二芳基丙酮与Bu 4 NI / CH 3 CN中的脂肪族胺电解成外消旋的Favorskii酰胺。在室温下恒定电流条件下,在简单的不分格电池中可以轻松进行电转换。包括吸电子取代基的1,3-二芳基丙酮的电催化Favorskii重排是有利的,并且α-苄基酰胺具有良好的产率。当使用几种不对称酮作为底物时,观察到具有中等区域选择性的这种重排。该化学方法还提供了在酰胺的α-位上构建手性中心的有效方法。
Compositions for enhancing memory and methods therefor
申请人:Baudry Michel
公开号:US20060063707A1
公开(公告)日:2006-03-23
Compositions for enhancing memory of a subject comprising a combination of a positive modulator of an AMPA receptor and a positive modulator of an NMDA receptor are provided, wherein each modulator of the combination is present at a subtherapeutic dose for effecting memory enhancement. Methods for using such compositions in the treatment of cognitive impairment associated with aging, age-related diseases, and CNS disorders, for example, are provided. New fusion molecules are also provided that combine the positive modulator functionalities into one molecule.
Temperature-controlled redox-neutral ruthenium(<scp>ii</scp>)-catalyzed regioselective allylation of benzamides with allylic acetates
作者:Rajendran Manikandan、Masilamani Jeganmohan
DOI:10.1039/c6ob01498d
日期:——
Substituted aromatic amides reacted efficiently with allylicacetates in the presence of a cationic ruthenium complex in ClCH2CH2Cl at roomtemperature providing ortho allylated benzamides in a highly regioselective manner without any oxidant and base. The whole catalytic reaction occurred in a Ru(II) oxidation state and thus the oxidation step is avoided. By tuning the reaction temperature, ortho allyl
Total Synthesis of (+)-Pancratistatin by the Rh(III)-Catalyzed Addition of a Densely Functionalized Benzamide to a Sugar-Derived Nitroalkene
作者:Tyler J. Potter、Jonathan A. Ellman
DOI:10.1021/acs.orglett.7b01220
日期:2017.6.2
Herein, we report the concise totalsynthesis of (+)-pancratistatin, accessed in a 10-step linear sequence from commercially available inputs. The convergent synthesis features a highly diastereoselective Rh(III)-catalyzed C–H bond addition to a d-glucose-derived nitroalkene and a late-stage intramolecular transamidation to furnish the B ring lactam.
method for direct catalytic introduction of simple α-acylalkyl groups via rhodium-catalyzed C–H functionalization with cyclic alkenyl carbonates, synthetic equivalents to enolates bearing leaving groups. The reaction proceeded smoothly without using bases to give α-aryl ketones in high yields. Various nitrogen-containing aromaticrings and amide groups serve as directing groups. 3-Substituted isocoumarins