Convenient synthesis of α-amino amides using low-valent tantalum prepared from TaCl5 and Zn
作者:Haruka Shimizu、Shū Kobayashi
DOI:10.1016/j.tetlet.2005.08.131
日期:2005.10
preparation method of α-amino amides from imines and isocyanates using low-valent tantalum prepared from TaCl5 and Zn in situ. This method was successfully applied to various imines derived from benzaldehyde derivatives with electron-withdrawing or electron-donating substituents, heteroaromatic aldehydes, and an aliphatic, α-branched aldehyde, giving the corresponding α-amino amides in high yields.
我们已经开发了使用由TaCl 5和Zn原位制备的低价钽从亚胺和异氰酸酯制备α-氨基酰胺的一般方法。该方法已成功应用于衍生自具有吸电子或供电子取代基的苯甲醛衍生物,杂芳族醛和脂肪族α-支化醛的各种亚胺,可高产率获得相应的α-氨基酰胺。