Efficient and Enantioselective Rhodium(I)-Catalyzed Arylation of α-Ketoesters: Synthesis of (<i>S</i>
)-Flutriafol
作者:Chiung-An Chang、Tsung-Ying Uang、Jia-Hong Jian、Meng-Yi Zhou、Ming-Liang Chen、Ting-Shen Kuo、Ping-Yu Wu、Hsyueh-Liang Wu
DOI:10.1002/adsc.201800575
日期:2018.9.3
An enantioselective addition of arylboronic acids and α‐ketoesters promoted by a Rhodium(I)‐chiral diene catalyst is reported. The transformation proceeds regioselectively in the presence of as low as 0.5 mol% of the catalyst generated in situ from a Rhodium(I) salt and diene L1, which is a bicyclo[2.2.1] ligand scaffold bearing 2,5 dinaphthyl substituents, to afford tertiary chiral α‐hydroxy esters
据报道,铑(I)-手性二烯催化剂可促进对映体选择性添加芳基硼酸和α-酮酸酯。在低至0.5 mol%的由铑(I)盐和二烯L1原位生成的催化剂的存在下,该区域选择性地进行转化,该二烯L1是带有2,5个二萘基取代基的双环[2.2.1]配体骨架。提供具有高立体选择性(90-99%ee's)和50-> 99%收率的叔手性α-羟基酯。该方法提供了一种快速,对映选择性的(S)-氟尿酚合成方法。