Preparation of 2- and 4-Arylmethyl <i>N</i>-Substituted and <i>N</i>,<i>N</i>-Disubstituted Anilines via a “Green”, Multicomponent Reaction
作者:Anthony E. Rosamilia、Janet L. Scott、Christopher R. Strauss
DOI:10.1021/ol0501828
日期:2005.4.14
[reaction: see text] A new, green, regioselective, one-step, multicomponent reaction of an aldehyde possessing a nonenolizable carbonyl function, cyclohex-2-enone (or a derivative thereof), and primary or secondary amines afforded 2-N-substituted arylmethyl anilines or 4-N,N-disubstituted arylmethyl anilines, respectively. Yields and regioselectivities were good. Evidence for a pathway involving imine
[EN] CHEMICAL PROCESSES AND COMPOUNDS DERIVED THEREFROM<br/>[FR] PROCÉDÉS CHIMIQUES ET COMPOSÉS DÉRIVÉS DE CEUX-CI
申请人:UNIV MONASH
公开号:WO2006012683A1
公开(公告)日:2006-02-09
The present invention relates to N-substituted anilines and derivatives thereof and in particular to chemical processes for the preparation of N-substituted anilines and derivatives thereof.
An efficient N-selective alkylation of primary aromatic amines in molten quaternary ammonium salts, as the solvent, under relatively mild and base-free conditions is presented. On the basis of the Kamlet–Taft parameters and the nucleophilicity of the IL (ionic liquid) anions, the influence of the ionic liquid was evaluated. This protocol was validated on a larger multigram scale and with the syntheses
介绍了在相对温和和无碱的条件下,以熔融季铵盐作为溶剂,伯芳胺的有效 N 选择性烷基化。在 Kamlet-Taft 参数和 IL(离子液体)阴离子的亲核性的基础上,评估了离子液体的影响。该协议在更大的多克规模上进行了验证,并与生物活性杂环(例如,1,4-苯并噻嗪和喹喔啉)和新的高效 MALDI 基质的合成有关。
Trifluoromethylarylation of alkenes using anilines
作者:Carlos Corral Suarez、Ignacio Colomer
DOI:10.1039/d3sc03868h
日期:——
role of hexafluoroisopropanol (HFIP) as a unique solvent, establishing a hydrogen bonding network with aniline and trifluoromethyl reagent, that is responsible for the altered reactivity and exquisite selectivity. This work uncovers a new mode of reactivity that involves the use of abundant anilines as a non-prefunctionalized aromatic source and the simultaneous activation of trifluoromethyl hypervalent