The steric influence on orientation in the Diels-Alder-reaction of nitroso benzene has been studied for various 5-aryl-2,4-pentadienoic acid methyl esters as reactants. Only “three-dimensional” bulky groups as substituents in the diene show this influence.
对于各种5-芳基-
2,4-戊二烯酸甲酯作为反应物,已经研究了
亚硝基苯的狄尔斯-阿德耳反应中空间取向对取向的影响。在二烯中仅作为取代基的“三维”大体积基团显示出这种影响。