Facile Synthesis of 3-N-Alkyl Pyrimidin-2,4-diones from N-Sulfonyloxy Maleimides and Amines
摘要:
Reaction of variously substituted N-trifluoromethanesulfonyloxy maleimides with primary amines in the presence of potassium carbonate in DMF at room temperature results in the formation of 3-N-alkyl pyrimidin-2,4-diones in good yield.
Facile Synthesis of 3-N-Alkyl Pyrimidin-2,4-diones from N-Sulfonyloxy Maleimides and Amines
摘要:
Reaction of variously substituted N-trifluoromethanesulfonyloxy maleimides with primary amines in the presence of potassium carbonate in DMF at room temperature results in the formation of 3-N-alkyl pyrimidin-2,4-diones in good yield.
A novel synthesis of fused perfluoroalkylated 2,3-dihydroisoxazoles is achieved via oxa-Michael-aldol annulation between perfluoroalk-2-ynoates and N-hydroxyimides. This method provides a convenient route for the synthesis of pyrrolidin-2-one-fused perfluoroalkylated 2,3-dihydroisoxazoles in yields of up to 97%. Diverse and pharmaceutically attractive polycyclic scaffolds can be obtained rapidly and
Rhodium-Catalyzed Regio- and Enantioselective Addition of <i>N</i>-Hydroxyphthalimide to Allenes: A Strategy To Synthesize Chiral Allylic Alcohols
作者:Zi Liu、Bernhard Breit
DOI:10.1021/acs.orglett.7b03709
日期:2018.1.5
We achieved the first Rh-catalyzed regio- and enantioselectiveadditions of N-hydroxyphthalimide to allenes. This transformation is accomplished via mild reaction conditions, leveraging on Josiphos SL-J003-2 as a chiral ligand to furnish branched O-allyl compounds in good yields with moderate to excellent enantioselectivities. The substrate scope is broad, and various functional groups are tolerated