Ni-catalyzed α-arylation of secondary α-bromo-α-fluoro-β-lactam: cross-coupling of a secondary fluorine-containing electrophile
作者:Atsushi Tarui、Shoji Kondo、Kazuyuki Sato、Masaaki Omote、Hideki Minami、Yoshihisa Miwa、Akira Ando
DOI:10.1016/j.tet.2012.12.002
日期:2013.2
A highly diastereoselective cross-coupling reaction of an α-bromo-α-fluoro-β-lactam with a wide range of aryl Grignard reagents was catalyzed by Ni/bis(oxazoline) in yields of up to 98%. The product was obtained diastereoselectively as an anti-isomer. This is the first successful α-arylation of an α-fluoro-β-lactam to produce diverse α-aryl-α-fluoro-β-lactams.
Ni /双(恶唑啉)催化α-溴-α-氟-β-内酰胺与多种芳基格氏试剂的高度非对映选择性交叉偶联反应,收率高达98%。非对映选择性地获得该产物作为反异构体。这是α-氟-β-内酰胺成功生产出多种α-芳基-α-氟-β-内酰胺的第一个成功的α-芳基化反应。