Phosphonium supported triphenylphosphine reagent: an improved access to α-fluoro-α,β-unsaturated esters
作者:Ludivine Zoute、Céline Lacombe、Jean-Charles Quirion、André B. Charette、Philippe Jubault
DOI:10.1016/j.tetlet.2006.09.008
日期:2006.11
efficiently synthetized via diethylzinc-promoted Wittig reaction using a phosphonium-supported triphenylphosphine SCG–PPh31, which possesses similar reactivity as its parent analog triphenylphosphine. The main advantage of this system is the use of a novel low-molecular-weight support that is soluble in solvents of medium polarities for the attachment of reagents and insoluble in solvents of low polarities
α-氟-α,β-不饱和酯2是通过二乙基锌促进的Wittig反应使用using负载的三苯基膦SCG-PPh 3 1有效合成的,该三苯基膦具有与其母体类似物三苯基膦相似的反应性。该系统的主要优点是使用了一种新型的低分子量载体,该载体可溶于中等极性的溶剂中以附着试剂,而不溶于低极性的溶剂中。