Core Structure-Oriented Asymmetric α-Allenylic Alkylation of Amino Acid Esters Enabled by Chiral Aldehyde/Palladium Catalysis
作者:Hao Zhang、Wei Wen、Ze-Xi Lu、Zhu-Lian Wu、Tian Cai、Qi-Xiang Guo
DOI:10.1021/acs.orglett.3c03762
日期:2024.1.12
to manzacidins A and D, here we report a highly efficient catalytic asymmetric α-allenylic alkylation reaction of NH2-unprotected amino acid esters that is promoted by combined chiral aldehyde/palladium catalysis. Fifty examples of unnatural α,α-disubstituted amino acid esters are reported with good-to-excellent yields and stereoselectivities. Based on this methodology, a key intermediate leading to
针对已报道的生成manzacidins A和D的手性合成子,我们在此报道了一种由手性醛/钯联合催化促进的NH 2 -未保护的氨基酸酯的高效催化不对称α-丙烯基烷基化反应。据报道,非天然 α,α-二取代氨基酸酯的 50 个实例具有良好至优异的产率和立体选择性。基于该方法,相应地制备了曼扎西定C及其其他三种立体异构体的关键中间体。