stoichiometric amount of ascorbic acid in combination with CuCl2·2H2O catalyst was found to promote the organic redox cascade transformation of alkynylquinones, successfully furnishing hydroxybenzofuran derivatives. By applying the present organic redox-driven copper-catalyzed cyclization protocol, a formal synthetic route to liphagal has been developed.
发现
化学计量的
抗坏血酸与 CuCl 2 ·2H 2 O 催化剂结合可促进炔基醌的有机氧化还原级联转化,成功地提供了羟基
苯并呋喃衍
生物。通过应用目前的有机氧化还原驱动的
铜催化环化方案,已经开发出一种正式的 liphagal 合成路线。