Copper-Catalyzed Diastereoselective Synthesis of Trifluoromethylated Tetrahydrofurans
作者:Yanan Wang、Min Jiang、Jin-Tao Liu
DOI:10.1002/adsc.201501166
日期:2016.4.14
The copper‐catalyzed intramolecular diastereoselective trifluoromethylcycloetherification of homoallylic alcohols with Togni’s reagent as trifluoromethylating reagent was realized under mild conditions. Various trifluoromethylated tetrahydrofurans were synthesized in moderate to good yields. Moreover, a wide range of common functional groups was tolerated.
Substrate-Directed Enantioselective Aziridination of Alkenyl Alcohols Controlled by a Chiral Cation
作者:Alexander Fanourakis、Nicholas J. Hodson、Arthur R. Lit、Robert J. Phipps
DOI:10.1021/jacs.3c00693
日期:——
Alkeneaziridination is a highly versatile transformation for the construction of chiral nitrogen-containing compounds. Inspired by the success of analogous substrate-directed epoxidations, we report an enantioselective aziridination of alkenyl alcohols, which enables asymmetric nitrene transfer to alkenes with varied substitution patterns, including those not covered by the current protocols. We believe
Ni-Catalyzed Stereoselective Arylation of Inert C–O bonds at Low Temperatures
作者:Josep Cornella、Ruben Martin
DOI:10.1021/ol4031815
日期:2013.12.20
A Ni-catalyzed arylation of inert C-O bonds that operates at temperatures as low as -40 degrees C is described. Unlike other methods for C-O bond cleavage utilizing organometallic species, this protocol operates at low temperatures, thus allowing the presence of sensitive functional groups with exquisite site-selectivity and stereoselectivity.