Synthesis of optically active N-allyl amino compounds with defined trisubstituted double bonds
作者:Uwe Bösche、Udo Nubbemeyer
DOI:10.1016/s0040-4020(99)00345-2
日期:1999.5
Optically active acyclic N-allylamino compounds with defined configurated trisubstituted double bonds were generated via a three step sequence. The first crucial step was a two-carbon chain elongation of chiral α-aminoacid esters succeeding in a Claisen ester condensation with acetic acid ester enolates. The so formed β-ketoesters were subjected to a one pot procedure of an enol trifluoromethanesulfonate
具有限定的构型三取代双键的旋光性无环N-烯丙基氨基化合物是通过三步序列生成的。关键的第一步是手性α-氨基酸酯的碳链延伸,成功地完成了克莱森酯与乙酸烯醇酯的缩合反应。如此形成的β-酮酸酯经历一锅法生产烯醇三氟甲磺酸酯和连续的钯催化的交叉偶联:Stille或Sonogashira型反应被允许选择性地产生三取代的E-烯烃。