RE[N(SiMe<sub>3</sub>)<sub>2</sub>]<sub>3</sub>-Catalyzed Guanylation/Cyclization of Amino Acid Esters and Carbodiimides
作者:Chengrong Lu、Chao Gong、Bei Zhao、Lijuan Hu、Yingming Yao
DOI:10.1021/acs.joc.7b02550
日期:2018.2.2
The example of rare-earth metal-catalyzed guanylation/cyclization of amino acid esters and carbodiimides is well-established, forming 4(3H)-2-alkylaminoquinazolinones in 65–96% yields. The rare-earth metal amides RE[N(TMS)2]3 (RE = Y, Yb, Nd, Sm, La; TMS = SiMe3) showed high activities, and La[N(TMS)2]3 performed best for a wide scope of the substrates.
稀土金属催化氨基酸酯和碳二亚胺的鸟苷酸化/环化的例子是公认的,以65-96%的产率形成4(3 H)-2-烷基氨基喹唑啉酮。稀土金属酰胺RE [N(TMS)2 ] 3(RE = Y,Yb,Nd,Sm,La; TMS = SiMe 3)表现出高活性,而La [N(TMS)2 ] 3表现最好。广泛的基材。