Potassium Hydroxide Catalyzed Addition of Arylamines to Styrenes
作者:Sven Doye、Daniel Jaspers
DOI:10.1055/s-0030-1260555
日期:2011.6
Potassiumhydroxide is a competent and cheap catalyst for theintermolecular addition of arylamines to styrenes. The reactionsare performed in nontoxic dimethyl sulfoxide and can be used forthe large-scale synthesis of β-phenylethylamines.
Extension of the Chan–Lam N-alkylation of anilines by using alkylboranes as organoboron partners is reported. Alkylboranes, synthesized by hydroboration of styrenes, are effectively coupled with anilines, which comprises a facile method for the synthesis of highly functionalized phenethylaniline derivatives. This is the first time that alkylboranes are used in C–N copper-promoted cross-coupling reactions
Kinetics and mechanism of reactions between 2-phenylethyl benzenesulphonates and anilines in methanol
作者:Ikchoon Lee、Yong Hoon Choi、Hai Whang Lee、Byung Choon Lee
DOI:10.1039/p29880001537
日期:——
Kinetics of reactions between 2-phenylethyl benzenesulphonates and anilines in methanol at 65.0 °C have been studied; the mechanism is discussed on the basis of crossinteractionconstants, ρij. The overall reaction was found to proceed by a dissociative SN2 mechanism with a relatively small degree of aryl participation. The fraction of the phenonium ion intermediate captured by the nucleophile, aniline
研究了在65.0°C下2-苯乙基苯磺酸盐与苯胺在甲醇中的反应动力学。该机构被交叉相互作用常数,ρ的基础上讨论IJ。发现整个反应是通过离解的S N 2机理进行的,其中芳基的参与程度相对较小。亲核辅助途径中,亲核试剂苯胺所捕获的苯离子中间体的分数已显示出随着亲核试剂的增强而增加,并且对于芳基-建议在分子间S N i机理中出现四中心过渡态。无辅助路径。
An (Aminopyrimidinato)titanium Catalyst for the Hydroamination of Alkynes and Alkenes
(aminopyrimidinato)titanium complex has been synthesised from inexpensive and easily accessible 2-(tert-butylamino)pyrimidine and [Ti(NMe2)4] and used as a catalyst for the intermolecular hydroamination of alkynes as well as the cyclization of aminoalkenes. The hydroamination reactions of 1-phenylpropyne and terminal arylalkynes deliver the corresponding anti-Markovnikov addition products with excellent yields and