Asymmetric Reaction of <i>p</i>-Quinone Diimide: Organocatalyzed Michael Addition of α-Cyanoacetates
作者:Sivakumar N. Reddy、Venkatram R. Reddy、Shrabani Dinda、Jagadeesh Babu Nanubolu、Rajesh Chandra
DOI:10.1021/acs.orglett.8b00771
日期:2018.5.4
Hitherto unknown catalytic enantioselective transformation of p-quinone diimides is achieved using chiral bifunctional organic molecules. Bifunctional thiourea compounds catalyze the Michael addition of cyanoacetates with excellent yields and enantioselectivities. The initially formed Michael adducts undergo cyclization to yield functionally rich, fused cyclic imidines bearing a quaternary benzylic
An efficient zinc-catalyzed amination of free anilines and free phenols with quinoneimides has been disclosed, which proceeds smoothly under simple and mild conditions. The para-selective amination is accomplished on the anilines and phenols via a 1,6-addition pathway, leading to C–N bond formation. The developed protocol offers a promising approach not only for the construction of structurally diverse
Lewis Acid Promoted Annulation of <i>p</i>-Quinoneimines by Allylsilanes: A Facile Entry into Benzofused Heterocycles
作者:Vijay Nair、C. Rajesh、R. Dhanya、Nigam P. Rath
DOI:10.1021/ol025503j
日期:2002.3.1
[GRAPHICS]Lewis acid promoted addition of allyltriisopropylsilane to p-quinoneimines afforded different benzofused heterocycles in moderate to good yields depending on the conditions employed.
A Novel Synthesis of 2-Aminopyrroles Using a Three-Component Reaction
作者:Vijay Nair、A. U. Vinod、C. Rajesh
DOI:10.1021/jo001714v
日期:2001.6.1
Avdeenko, A. P.; Ryazantsev, V. P.; Mishchenko, A. I., Journal of general chemistry of the USSR, 1986, vol. 56, p. 2203 - 2205
作者:Avdeenko, A. P.、Ryazantsev, V. P.、Mishchenko, A. I.