Synthesis of α-Fluorinated Imides via Direct Fluorohydroxylation of Ynamides
作者:Ji-Lin Li、E. Lin、Xiang-Lei Han、Qingjiang Li、Honggen Wang
DOI:10.1021/acs.orglett.9b01428
日期:2019.6.7
A practical synthesis of α-fluorinated imides via the catalyst-free fluorohydroxylation of ynamides is developed. The reaction employs commercially available Selectfluor (F-TEDA-BF4) and H2O as the fluorine and hydroxyl sources, respectively. A broad range of aryl- or alkyl-substituted ynamides were well applicable to the reaction with good functional group tolerance under simple and mild reaction
A diastereoselective Mannich-type reaction of α-fluorinated carboxylate esters: synthesis of β-amino acids containing α-quaternary fluorinated carbon centers
作者:Xiang Li、Ya Li、Huaqi Shang
DOI:10.1039/c6ob01084a
日期:——
We report a diastereoselective Mannich-type reaction of α-alkyl, α-aryl, and α-vinyl fluoroacetates with N-tert-butylsulfinyl imines. This method provides a powerful means to access a broad range of highly functionalized β-amino acids containing α-fluorinated quaternarystereogenic carbon centers. We also show that the stereochemical outcome of the present reaction is highly dependent on the steric
We herein describe a new method for nucleophilic fluorine substitution of alkylbromides using Et3N·3HF. The process is characterized by a broad substrate scope, good functional-group compatibility, and mild conditions and provides a variety of alkylfluorides including tertiary alkylfluorides that are versatile and structurally attractive.
我们在此描述了一种使用 Et 3 N·3HF 亲核氟取代烷基溴的新方法。该工艺具有底物范围广、官能团相容性好、条件温和等特点,可提供多种烷基氟化物,包括叔烷基氟化物,用途广泛且结构有吸引力。