Rh(III)-catalyzed C−H alkylation of indolines with enones through conjugate addition and protonation pathway
作者:Hyunjung Oh、Jihye Park、Sang Hoon Han、Neeraj Kumar Mishra、Suk Hun Lee、Yongguk Oh、Mijin Jeon、Gyeong-Joo Seong、Ka Young Chung、In Su Kim
DOI:10.1016/j.tet.2017.06.052
日期:2017.8
The rhodium(III)-catalyzed C−H alkylations of indolines with enones and enals is described. This reaction can proceed through 1,4-conjugate addition and protonation process providing β-indolinic ketone compounds, which are known to be crucial scaffolds of biologically active compounds.
A hydroarylativecoupling of internalalkynes with indolines and tetrahydroquinolines has been developed using the bench‐stable and inexpensive ruthenium (II) catalyst. The applicability of this methodology has been demonstrated by the late stage functionalization of natural products, biologically active molecules, and APIs.
A unified strategy for silver-, base-, and oxidant-free direct arylation of C–H bonds
作者:Manoj K. Sahoo、Siba P. Midya、Vinod G. Landge、Ekambaram Balaraman
DOI:10.1039/c6gc03438a
日期:——
C–N2 bond cleavage. This unified strategy has been achieved by the synergistic combination of visible-light metal-free photoredox and palladiumcatalysis under silver-, base- and/or additive-free conditions. The broad substrate scope, functional group tolerance, excellent regioselectivity and redox-neutral conditions of this process make it attractive for the effective synthesis of a wide range of important
Ru(II)-Catalyzed C–H Amidation of Indoline at the C7-Position Using Dioxazolone as an Amidating Agent: Synthesis of 7-Amino Indoline Scaffold
作者:Akshay Ekanath Hande、Kandikere Ramaiah Prabhu
DOI:10.1021/acs.joc.7b02500
日期:2017.12.15
The Ru(II)-catalyzed C–H amidation of indoline at the C7-position en route for synthesizing the 7-amino indole scaffold has been achieved by using dioxazolone, which is an environmentally benign amidating reagent. This protocol paves the way for synthesizing a variety of 7-amino indole derivatives in excellent yields at ambient reaction conditions. The readily cleavable amide group has been utilized