一些2-L-3-Y-5-nitrothiophenes的反应的动力学(L = Br的,OC 6 H ^ 5,OC 6 H ^ 4 NO 2 - p YCONH 2,CO 2 Me)的带正丁胺,为了获得和了解邻位取代基(Y)在确定碱催化作用的发生和形式中的作用,已经研究了苯胺在293.15 K处的苄胺,吡咯烷和哌啶。获得的结果还允许获得有关取代基,噻吩环和反应中心之间相互作用的重要信息。
The kinetics of the reactions of some 2-L-5-nitro-3-X-thiophenes with primary and secondary amines in methanol at various temperatures have been studied with the aim of obtaining information about the proximity effects of 3-X ortho-like substituents. The results obtained have shown that for all the substituents considered, except for X = Br, the proximity effects of steric nature are of little relevance