<scp>Iron‐Catalyzed</scp>
Primary C—H Amination of Sulfamate Esters and Its Application in Synthesis of Azetidines
<sup>†</sup>
作者:Yan Zhang、Dayou Zhong、Muhammad Usman、Peng Xue、Wen‐Bo Liu
DOI:10.1002/cjoc.202000299
日期:2020.12
The direct amination of unactivated primary C—H bonds is extremely challenging due to their inert nature. Herein, we report an intramolecular primary C—Hamination of sulfamate esters using an iron catalyst derived from iron(II) triflate and bipyridine. An array of oxathiazinanes were synthesized in moderate to good yields, which were further converted into biologically important azetidines by a one‐pot
Grignard Additions to Cyclic Sulfamidate Imines: Synthesis of N-Substituted Quaternary Sulfamidate Building Blocks
作者:Ernest Lee、Stanley Chang
DOI:10.1055/s-0029-1218778
日期:2010.7
The addition of Grignard reagents to cyclic sulfamidate imines has been developed as a facile method for the synthesis of N-substituted quaternary sulfamidates. By way of ring opening with an appropriate nucleophile, versatile synthons for 1,2-amino alcohols, 1,2-diamines, and β-amino acids are produced. cyclic imine - Grignardaddition - sulfamidate imine - N-substituted quaternary stereocenter