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2005
Furan derivatives
R 0060
A Convenient Synthesis of Fluoroalkylated γ-Butyrolactones from Polyfluoroalkyl
Iodides and 4-Pentenoic Acid Catalyzed by Pd(PPh3)4. — In a polyfluoroalkylation
35- 116 model
reaction between pentenoic acid (I) and fluoroalkyl iodide (IIb), metals and metal complexes initiate the addition reaction providing conversion values between 50 and
95%. The best results are obtained with tetrakis(triphenylphosphine)palladium. Sequential treatment with triethylamine affords the lactone in one-pot. Under similar conditions, polyfluoroalkyl iodides (IIa) and (IIc)—(IIe) react with (I) affording the corresponding lactones (III) in good yields. — (XIAO, F.; WU*, F.; YANG, X.; SHEN, Y.;
SHI, X.; J. Fluorine Chem. 126 (2005) 3, 319-323; Coll. Chem. Pharm., East China
Univ. Chem. Technol., Shanghai 200237, Peop. Rep. China; Eng.) —
H. Hoennerscheid
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