The Goldilocks Principle in Phase Labeling. Minimalist and Orthogonal Phase Tagging for Chromatography-Free Mitsunobu Reaction
作者:Mariann Szigeti、Zoltán Dobi、Tibor Soós
DOI:10.1021/acs.joc.8b00014
日期:2018.3.2
An inexpensive and chromatography-free Mitsunobu methodology has been developed using low molecular weight and orthogonally phase-tagged reagents, a tert-butyl-tagged highly apolar phosphine, and a water-soluble DIAD analogue. The byproduct of the Mitsunobu reactions can be removed by sequential liquid–liquid extractions using traditional solvents such as hexanes, MeOH, water, and EtOAc. Owing to the
使用低分子量和正交相标记的试剂,叔丁基标记的高度非极性膦和水溶性DIAD类似物,已经开发了一种廉价且无色谱的Mitsunobu方法。Mitsunobu反应的副产物可通过使用传统溶剂(例如己烷,MeOH,水和EtOAc)进行连续的液-液萃取而除去。由于正交相标记,用过的试剂可以再生。Mitsunobu反应的这一新变体有望为Mitsunobu反应的众所周知的分离问题提供替代和补充的解决方案,而不必诉诸昂贵的大分子量试剂和色谱法。