Here we describe a new family of N-form immonium-type coupling reagents that differ in their carbocation skeleton structure. The N-methylpiperazine derivative failed to form immonium salts, while the thiomorpholine derivative did not give better results than the coupling reagents currently used. The presence of the morpholine had a marked influence on the solubility and stability as well as the reactivity
在这里,我们描述了一个新的N型
铵型
偶联剂家族,它们的碳正离子骨架结构不同。所述Ñ甲基
哌嗪衍
生物未能形成
亚胺的盐,而
硫代吗啉衍
生物并没有给出比目前使用的偶联试剂更好的结果。吗啉的存在对试剂的溶解度和稳定性以及反应性具有显着影响。最后,
氟ami鎓盐在仅1当量碱的存在下表现极好,从而证实了质子受体在反应中的作用。