作者:Sylvain Ladame、Michèle Willson、Jacques Périé
DOI:10.1002/1099-0690(200208)2002:15<2640::aid-ejoc2640>3.0.co;2-9
日期:2002.8
The first synthesis of dibenzyl α,α-difluoro-β-ketophosphonates has been accomplished by an original fluorination reaction, namely addition of the F+ ion to the enolate form of the corresponding dibenzyl β-ketophosphonate. After an easy cleavage of the benzyloxy protecting groups on the phosphorus atom, α-fluoro-β-ketophosphonic acids were subsequently obtained as stable carboxyphosphate mimics. This
α,α-二氟-β-酮膦酸二苄酯的首次合成是通过原始氟化反应完成的,即将 F+ 离子加成到相应的 β-酮膦酸二苄酯的烯醇化物形式中。在磷原子上的苄氧基保护基团容易裂解后,随后获得 α-氟-β-酮膦酸作为稳定的羧基磷酸酯模拟物。这种方法能够将 α,α-二氟-β-酮膦酸酯部分引入多官能化分子中,从而使之前描述的二乙基膦酸酯路线不再适用。此外,对它们在中性和碱性条件下的稳定性的研究表明,酮-烯醇平衡在这些分子的分解途径中的重要性。(© Wiley-VCH Verlag GmbH, 69451 Weinheim, Germany, 2002)