Palladium-catalyzed highly selective intramolecular bromoamination of alkenes: Efficient synthesis of substituted pyrrolidines
作者:Jingfang Zhang、Xie Wang、Yulong Liu、Xiaoyun Wang、Wei He
DOI:10.1002/aoc.3631
日期:2017.6
A new method has been developed for the preparation of substituted pyrrolidines by the palladium‐catalyzed intramolecular bromoamination of substituted aminoalkenes. The catalytic system and reaction conditions used for this transformation have been fully optimized. Notably, this reaction exhibits excellent selectivity, affording the pyrrolidine products as single 5‐exo‐bromoalkylpyrrolidines in excellent
Enantioselective Syntheses of 2-Azabicyclo[2.2.1]heptanes via Brønsted Acid Catalyzed Ring-Opening of <i>meso</i>-Epoxides
作者:Min Cai、Jiao Ma、Qimin Wu、Aijun Lin、Hequan Yao
DOI:10.1021/acs.orglett.2c03529
日期:2022.12.9
A chiral phosphoric acid-catalyzed ring-opening of meso-epoxides was developed. A range of 2-azabicyclo[2.2.1]heptanes were obtained in high yields with excellent enantioselectivities. In addition, the hydroxyl and amide groups in the products provided handles for further derivatization.