作者:Elías-Rodríguez, Pilar、Benítez, Manuel、Iglesias-Sigüenza, Javier、Díez, Elena、Fernández, Rosario、Lassaletta, José M.、Monge, David
DOI:10.1021/acs.orglett.4c02091
日期:——
Enantioselective synthesis of 3(2H)-furanones has been achieved using the intermolecular H-bonding activation of gold(I) chloride complexes. A DM-BINAP [(R)-(+)-2,2′-Bis[di(3,5-xylyl)phoshino]-1,1′-binaphthyl] digold(I) dichloride complex in combination with a sulfonyl squaramide (SO2Sq) has been identified as the optimal catalytic system. The process involves a 5-endo-dig oxa-cyclization followed
利用氯化金 (I) 络合物的分子间氢键活化实现了 3(2 H )-呋喃酮的对映选择性合成。 DM-BINAP [( R )-(+)-2,2′-双[二(3,5-二甲苯基)膦]-1,1′-联萘]二氯化金(I)络合物与磺酰方酰胺的组合(SO 2 Sq)已被确定为最佳催化体系。该过程涉及 5-内-地物氧杂环化,然后立体控制地添加吲哚。有趣的是,通过氢键的软 L*Au-Cl 活化允许在色谱纯化后回收 L*Au-Cl 和活化剂。