Palladium-Catalyzed [3+3] Annulation between Diarylamines and α,β-Unsaturated Acids through CH Activation: Direct Access to 4-Substituted 2-Quinolinones
作者:Rajesh Kancherla、Togati Naveen、Debabrata Maiti
DOI:10.1002/chem.201500774
日期:2015.6.1
A CHactivation strategy has been successfully employed for the high‐yielding synthesis of a diverse array of 4‐substituted2‐quinolinone species by a palladium‐catalyzed dehydrogenative coupling involving diarylamines. This intermolecular annulation approach incorporates readily available α,β‐unsaturated carboxylic acids as the couplingpartner by suppressing the facile decarboxylation. Based on
AC ħ激活策略已被成功地用于通过涉及二芳基胺钯催化脱氢偶联高产合成4-取代的2-喹啉酮物种的多样性阵列的。这种分子间环化方法通过抑制容易的脱羧作用,结合了易于获得的α,β-不饱和羧酸作为偶联伴侣。在初步的机理研究的基础上,提出了一个反应顺序,包括邻,π-配位,β-迁移插入和β-氢化物消除。
AMINO-5-[4-(DIFLUOROMETHOXY)PHENYL]-5-PHENYLIMIDAZOLONE COMPOUNDS FOR THE INHIBITION OF BETA-SECRETASE
申请人:Malamas Michael Sotirios
公开号:US20090048320A1
公开(公告)日:2009-02-19
The present invention provides compounds and methods for the use thereof to inhibit β-secretase (BACE) and treat β-amyloid deposits and neurofibrillary tangles.
本发明提供了化合物和方法,用于抑制β-分泌酶(BACE)并治疗β-淀粉样沉积物和神经原纤维缠结。
<i>N</i>-(Substituted-anilinoethyl)amides: Design, Synthesis, and Pharmacological Characterization of a New Class of Melatonin Receptor Ligands
A novel series of melatonin receptor ligands, characterized by a N-(substituted-anilinoethyl)amido scaffold, along with preliminarystructure-activityrelationships (SARs), is presented. MT1 and MT2 receptor binding affinity and intrinsic activity have been modulated by the introduction of different substituents on the aniline nitrogen, on the benzene ring, and on the amide side chain. Modulation of
LOW VISCOSITY LOW VOLATILITY LUBRICATING OIL BASE STOCKS AND PROCESSES FOR PREPARING SAME
申请人:ExxonMobil Research and Engineering Company
公开号:US20170137735A1
公开(公告)日:2017-05-18
A composition that includes one or more compounds represented by the formula
R
1
—O—R
2
wherein R
1
is a substituted or unsubstituted aryl or polyaryl group having from about 4 to about 40 carbon atoms, and R
2
is the residue of a substituted or unsubstituted glycol ether having from about 4 to about 40 carbon atoms. The composition has a viscosity (Kv
100
) from about 1 to about 10 cSt at 100° C. as determined by ASTM D-445, a viscosity index (VI) from about −100 to about 300 as determined by ASTM D-2270, and a Noack volatility of no greater than 50 percent as determined by ASTM D-5800. The disclosure also relates to a process for producing the composition, a lubricating oil base stock and lubricating oil containing the composition, and a method for improving one or more of oxidative stability, solubility and dispersancy of polar additives of a lubricating oil by using as the lubricating oil a formulated oil containing the composition.
<i>o</i>-Iodoxybenzoic Acid Mediated<i>N</i>-Arylation of Aromatic Amines by Using Arylhydrazines as the Arylating Counterpart
作者:Ravindra R. Jadhav、Sameerana N. Huddar、Krishnacharya G. Akamanchi
DOI:10.1002/ejoc.201300917
日期:2013.10
the combination of arylhydrazines with o-iodoxybenzoicacid (IBX) for the generation of aryl free radicals. On the basis of this finding, a method was developed for the N-arylation of aromaticamines under mild conditions (base-free, –5 °C) by usingarylhydrazines as the arylatingcounterpart and arylamines. The scope of this method was demonstrated by using a number of arylhydrazines and arylamines,