Simple Cyclohexanediamine-Derived Primary Amine Thiourea Catalyzed Highly Enantioselective Conjugate Addition of Nitroalkanes to Enones
摘要:
A highly enantioselective conjugate addition of nitroalkanes to enones has been developed. The process is efficiently catalyzed by a simple chiral cyclohexanediamine-derived primary amine thiourea with a broad substrate scope.
Enantioselective Conjugate
Addition of N-Heterocycles to α,β-Unsaturated Ketones
Catalyzed by Chiral Primary Amines
作者:Wenhu Duan、Wei Wang、Guangshun Luo、Shilei Zhang
DOI:10.1055/s-0029-1216636
日期:——
A new organocatalytic enantioselectiveconjugateaddition reaction of nitrogen-centered heterocycles with α,β-unsaturated ketones has been developed. Promoted by a chiral cinchona alkaloid derived primary amine, the reaction affords the adducts in moderate to high enantioselectivities. primary amines - N-heterocycles - enones - conjugateaddition - catalysis
Regioselective Synthesis of <i>N</i>-Aminoisoindolones and Mono-<i>N</i>- and Di-<i>N,N</i>′-substituted Phthalazones Utilizing Hydrazine Nucleophiles in a Palladium-Catalyzed Three-Component Cascade Process
A palladium-catalyzed three-component cascade process for the synthesis of isoindolone and phthalazone derivatives is reported. The cascade process involves carbonylation of an aryl iodide/Michael acceptor to give an acylpalladium species which is intercepted by a hydrazine nucleophile. Intramolecular Michael addition follows to give either N-aminoisoindolones or mono- N- and di-N,N'-phthalazones depending