A new strategy for the synthesis of 3,5-disubstituted phenols is established through one-pot Robinson annulation of α,β-unsaturated ketones with α-fluoro-β-ketoesters followed by in situ dehydrofluorination and tautomerization. This method has been extended to the synthesis of polysubstituted phenols and applied in the preparation of biologically active compounds.
An efficient synthesis of (Z)-α-fluorochalcones via the palladium-catalyzed cross-coupling reaction of (Z)-α-fluorocinnamoyl chloride with boronic acids
An efficient synthesis of α-fluorochalcones (1,3-diphenyl-2-fluoroprop-2-en-1-one) based on the Suzuki–Miyaura palladium-catalyzed cross-coupling reaction of arylboronic acids with α-fluorocinnamoyl chlorides in the presence of Cs2CO3 in toluene is described. This approach allows the synthesis of fluorinated analogues of functionalized natural chalcones.
在存在的情况下,基于铃木-宫浦钯催化的芳基硼酸与α-氟肉桂酰氯的交叉偶联反应,可高效合成α-氟代查耳酮(1,3-二苯基-2-氟代丙-2-烯-1-酮)描述了甲苯中Cs 2 CO 3的含量。这种方法可以合成功能化天然查耳酮的氟化类似物。
Novel Synthesis of (<i>E</i>)-α-Fluorochalcones
作者:Zhi-Zhen Huang、Lei Wang
DOI:10.1055/s-2002-32981
日期:——
α-Fluorochalcones 4 can be synthesized by the Wittig reaction via α-fluoro substituted ylide 3, affoding a general method for the stereoselective synthesis of (E)-α-fluoro-α,β-unsaturated compounds 4.
Copper and Palladium Cocatalyzed Defluorinative Coupling of <i>gem</i>-Difluoroalkenes and Acyl Chloride
作者:Xinyu Liu、Juanjuan Wu、Chun Zhang
DOI:10.1021/acs.orglett.3c00347
日期:2023.3.10
A novel copper and palladium cocatalyzed defluorinative coupling of gem-difluoroalkenes and acyl chlorides has been developed. It is a practical method to prepare α-fluorochalcones, which are a kind of important unit in a variety of bioactive compounds. Under mild reaction conditions, a series of substrates with various functional groups could afford desired products smoothly. Further synthetic studies