Mixed 1,1-Bisphosphorus Compounds: Synthesis, Alkylation, and Horner−Wadsworth−Emmons Olefination Reactions
作者:Stéphanie Ortial、Dane A. Thompson、Jean-Luc Montchamp
DOI:10.1021/jo101814w
日期:2010.12.3
competitive with other methods for the synthesis of alkenyl phosphorus compounds, and in the case of trisubstituted alkenes, regio- and stereocontrolled olefination provides products not easily accessible via any other process. The deprotection of phosphine−borane adducts was also demonstrated. Overall, a variety of novel organophosphorus reagents and products were synthesized easily and in good yields
通过膦酸酯二酯阴离子与P(III)氯膦或其P(V)硼烷络合物之间的反应制备混合的1,1-双磷化合物。在原位或在单独的步骤中进行去质子化之后,可以将所得产物烷基化或与羰基化合物反应。通常得到高E-立体选择性的各种烯烃化产物。该反应与用于合成烯基磷化合物的其他方法竞争,并且在三取代的烯烃的情况下,区域和立体控制的烯烃化提供了不易通过任何其他方法获得的产物。还证明了膦-硼烷加合物的脱保护。总体而言,各种新型有机磷试剂和产物易于合成且收率很高。