Rhodium(III)-Catalyzed Tandem [2+2+2] Annulation-Lactamization of Anilides with Two Alkynoates via Cleavage of Two Adjacent C−H or C−H/C−O bonds
作者:Miho Fukui、Yu Shibata、Yuki Hoshino、Haruki Sugiyama、Kota Teraoka、Hidehiro Uekusa、Keiichi Noguchi、Ken Tanaka
DOI:10.1002/asia.201600943
日期:2016.8.19
An electron‐deficient CpE rhodium(III) complex bearing a cyclopentadienyl ligand with two ethyl ester substituents catalyzes the tandem [2+2+2] annulation–lactamization of acetanilides with two alkynoates via cleavage of adjacent two C−H bonds to give densely substituted benzo[cd]indolones. The reactions of meta‐methoxy‐substituted acetanilides with two alkynoates also provided benzo[cd]indolones via
带有环戊二烯基配体和两个乙基酯取代基的缺电子的Cp E铑(III)络合物通过两个相邻的C-H键的裂解来催化[2 + 2 + 2]对乙酰苯胺与两个炔酸的环化-内酰胺化反应取代的苯并[ cd ]吲哚酮。的反应中的元甲氧基-取代的乙酰苯胺具有两个alkynoates还提供了苯并[ CD ]吲哚酮通过相邻的C-H / C-O键的断裂。此外,3,5-二甲氧基乙酰苯胺与两种链烷酸酯反应生成脱芳族的螺环化合物。