41018-94-4Relevant articles and documents
Synthesis of indolo[2,1-: A] isoquinoline derivatives via visible-light-induced radical cascade cyclization reactions
Wei, Yun-Long,Chen, Jian-Qiang,Sun, Bo,Xu, Peng-Fei
supporting information, p. 5922 - 5925 (2019/05/27)
We describe a photocatalyzed transformation for the synthesis of the indolo[2,1-a]isoquinoline core structure. This redox neutral reaction features mild reaction conditions and exceptional functional group tolerance. A series of valuable indolo[2,1-a]isoquinoline derivatives bearing various functional groups were synthesized using this method in good to excellent yields.
Catalytic Asymmetric N-Alkylation of Indoles and Carbazoles through 1,6-Conjugate Addition of Aza-para-quinone Methides
Chen, Min,Sun, Jianwei
supporting information, p. 4583 - 4587 (2017/04/11)
Catalytic asymmetric N-alkylation of indoles and carbazoles represents a family of important but underdeveloped reactions. Herein, we describe a new organocatalytic strategy in which in situ generated aza-para-quinone methides are employed as the alkylating reagent. With the proper choice of a chiral phosphoric acid and an N-protective group, the intermolecular C?N bond formation with various indole and carbazole nucleophiles proceeded efficiently under mild conditions with excellent enantioselectivity and functional-group compatibility. Control experiments and kinetic studies provided important insight into the reaction mechanism.
General and efficient synthesis of indoles through triazene-directed c-h annulation
Wang, Chengming,Sun, Huan,Fang, Yan,Huang, Yong
, p. 5795 - 5798 (2013/06/27)
Unprotected indoles are prepared with the title method, which has a wide scope for alkynes. Excellent regioselectivity was accomplished for aryl-alkyl and alkyl-alkyl disubstituted acetylenes. This reaction features an unusual 1,2 rhodium migration and ring-contraction-triggered N-N bond cleavage. It allows rapid conversion of the reaction products into several functional molecules. Copyright