Catalytic Aerobic Cross-Dehydrogenative Coupling of Azlactones en Route to α,α-Disubstituted α-Amino Acids
作者:Taro Tsuji、Takafumi Tanaka、Tsukushi Tanaka、Ryo Yazaki、Takashi Ohshima
DOI:10.1021/acs.orglett.0c01248
日期:2020.6.5
We developed a catalytic aerobic method to synthesize α,α-disubstituted α-amino acids through cross-dehydrogenative coupling of azlactones. Combining an iron catalyst with a bisoxazolidine ligand resulted in high catalytic performance, and cross-coupling with an indole proceeded smoothly under aerobic conditions. A wide variety of α-aryl and aliphatic amino acid derived azlactones were applied to the
我们开发了一种催化好氧方法,可通过氮杂内酯的交叉脱氢偶联来合成α,α-二取代的α-氨基酸。将铁催化剂与双恶唑烷配体结合使用可获得较高的催化性能,在有氧条件下,与吲哚的交叉偶联反应顺利进行。多种由α-芳基和脂族氨基酸衍生的z内酯被用于本催化。此外,在有氧条件下,可以使用羟吲哚和苯并呋喃酮构建季碳。