A Facile Synthesis of 2,4-Disubstituted 3-Fluoroquinolines via Intramolecular Cyclization of<i>o</i>-Cyanomethylamino-β,β-difluorostyrenes
作者:Yukinori Wada、Takashi Mori、Junji Ichikawa
DOI:10.1246/cl.2003.1000
日期:2003.11
o-Cyanomethylamino-β,β-difluorostyrenes are treated with base (LiTMP, NaH, or K2CO3) to generate the corresponding carbanions, which in turn readily undergo intramolecular replacement of the vinylic fluorine and subsequent elimination to afford 2,4-disubstituted 3-fluoroquinolines in good yield.
邻氰甲基氨基-β,β-二氟苯乙烯经碱(LiTMP、NaH 或 K2CO3)处理后生成相应的碳离子,这些碳离子又很容易发生乙烯基氟的分子内置换和随后的消去反应,从而以良好的收率得到 2,4-二取代的 3-氟喹啉。