A New, Short, and Stereocontrolled Synthesis of <i>C</i><sub>2</sub>-Symmetric 1,2-Diamines
作者:Rajender Vemula、Nathan C. Wilde、Rajendar Goreti、E. J. Corey
DOI:10.1021/acs.orglett.7b01768
日期:2017.7.21
reaction of ammonia, glyoxal hydrate, and cyclohexanone. It is a very useful precursor for the diastereocontrolled synthesis of many C2-symmetric 1,2-diamines, a class which is important for the generation of a variety of C2-symmetric reagents and catalysts for enantioselective synthesis.
Asymmetric Construction of Spirooxindoles by Organocatalytic Multicomponent Reactions Using Diazooxindoles
作者:Ming-Yue Wu、Wei-Wei He、Xin-Yuan Liu、Bin Tan
DOI:10.1002/anie.201504640
日期:2015.8.3
The first highly diastereo‐ and enantioselective multicomponentreaction of diazooxindoles, nitrosoarenes, and nitroalkenes using a newly developed hydrogen‐bond catalyst has been successfully developed for the efficient construction of a series of spirooxindole derivatives with excellent functional‐group tolerance. Spirooxindoles are formed in excellent yields and stereoselectivities, and the method