Chiral lithium amide mediated asymmetric synthesis of 3-aryl-3,4-dihydroisocoumarins
作者:Arvind Kumar Sharma、Yogita Maheshwary、Paramjit Singh、Kamal Nain Singh
DOI:10.3998/ark.5550190.0011.906
日期:——
An asymmetric synthesis of 3-aryl-3,4-dihydroisocoumarins using the reaction of laterally lithiated 4,4-dimethyl-2-(o-tolyl)oxazoline with aromatic aldehydes, in the presence of an external chiral ligand, gave products with enantiomeric excess (ee) in the range of 60-70%.
在外部手性配体存在下,使用侧向锂化的 4,4-二甲基-2-(邻甲苯基)恶唑啉与芳香醛反应不对称合成 3-芳基-3,4-二氢异香豆素,得到具有对映体的产物过量 (ee) 在 60-70% 的范围内。