Asymmetric Synthesis of Alkyl Fluorides: Hydrogenation of Fluorinated Olefins
作者:Sudipta Ponra、Jianping Yang、Sutthichat Kerdphon、Pher G. Andersson
DOI:10.1002/anie.201903954
日期:2019.7
chiral fluorine‐containing molecules is important for several scientific disciplines. We herein disclose a straightforward method for the preparation of chiral organofluorine molecules that is based on the iridium‐catalyzed asymmetric hydrogenation of trisubstituted alkenyl fluorides. This catalytic asymmetric process enables the synthesis of chiral fluorine molecules with or without carbonyl substitution
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 Wittigreaction 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