Pentylpyridinium Tribromide: A Vapor Pressure Free Room Temperature Ionic Liquid Analogue of Bromine
作者:José Salazar、Romano Dorta
DOI:10.1055/s-2004-825598
日期:——
and characterization of the room temperature ionic liquid pentylpyridinium tribromide (2) is described. Tribromide 2 was used as a vapor pressure free bromine analogue for the bromination of ketones, aromatics, alkenes, and alkynes. The brominations were carried out in the absence of organic solvents and in most cases the only extraction solvent needed was water. Selectivities and reactivities were
Total Synthesis of Stachyodin A via One-Pot Suzuki Coupling for Quick Construction of Carbon Skeleton
作者:Yuichiro Kawamoto、Toyoharu Kobayashi、Hisanaka Ito
DOI:10.1021/acs.orglett.1c00998
日期:2021.5.21
Stachyodin A, possessing a unique spirotetrahydrofuran ring system, was isolated from the roots of Indigofera stachyodes in 2018. The first total synthesis of racemic stachyodin A was accomplished in 14 steps. The efficient stereoselective synthetic route involved one-pot Suzuki coupling and stereocontrolled epoxidation followed by reductiveopening and spirocyclization.