Nickel-Catalyzed Asymmetric Addition of Aromatic Halides to Ketones: Highly Enantioselective Synthesis of Chiral 2,3-Dihydrobenzofurans Containing a Tertiary Alcohol
作者:Ying Li、Wendian Li、Jiangyan Tian、Guozheng Huang、Hui Lv
DOI:10.1021/acs.orglett.0c01612
日期:2020.7.17
A highly enantioselective and straightforward synthetic procedure to chiral 3-hydroxy-2,3-dihydrobenzofurans has been developed by nickel/bisoxazoline-catalyzed intramolecular asymmetric addition of aryl halides to unactivated ketones, giving 2,3-dihydrobenzofurans with a chiral tertiary alcohol at the C-3 position in good yields and excellent enantioselectivities (up to 92% yield and 98% ee). The
通过镍/双恶唑啉催化的未活化酮中芳基卤化物的分子内不对称加成反应,开发了一种高度对映选择性的简单手性3-羟基-2,3-二氢苯并呋喃合成方法,得到了2,3-二氢苯并呋喃与手性叔醇。 C-3位置具有良好的收率和出色的对映选择性(高达92%的收率和98%的ee)。克级反应也顺利进行,而没有损失收率和对映选择性。