Expedient synthesis of α-substituted fluoroethenes
作者:Samir K. Mandal、Arun K. Ghosh、Rakesh Kumar、Barbara Zajc
DOI:10.1039/c2ob07031f
日期:——
mild and efficient synthesis of 1-aryl-1-fluoroethenes from benzothiazolyl (aryl)fluoromethyl sulfones and paraformaldehyde, under DBU- or Cs2CO3-mediated conditions at room temperature, is described. A comparable diethyl fluoro(naphthalen-2-yl)methylphosphonate reagent does not react with paraformaldehyde under these mild conditions. The utility of the methodology for synthesis of terminal α-fluoroalkenes
描述了在室温下,在 DBU 或 Cs 2 CO 3介导的条件下,由苯并噻唑基(芳基)氟甲基砜和多聚甲醛温和有效地合成 1-芳基-1-氟乙烯。类似的氟(萘-2-基)甲基膦酸二乙酯试剂在这些温和条件下不会与多聚甲醛发生反应。还显示了该方法用于合成带有吸电子官能团的末端 α-氟代烯烃的实用性。