Asymmetric synthesis of (1R,2S)-2-fluorocyclopropylamine, the key intermediate of the new generation of quinolonecarboxylic acid, DU-6859
作者:Osamu Tamura、Masaru Hashimoto、Yuko Kobayashi、Tadashi Katoh、Kazuhiko Nakatani、Masahiro Kamada、Isao Hayakawa、Toshifumi Akiba、Shiro Terashima
DOI:10.1016/s0040-4039(00)92670-4
日期:1992.6
The title synthesis was achieved by featuring diastereoface selective cyclopropanation of (4R,5S)-4,5-diphenyl-3-vinyl-2-oxazolidinone, the chiral and conformationally rigid N-vinylcarbamate, with zinc-monofluorocarbenoid followed by hydrogenolysis of formed (4R,5S)-3-[(1R-2S)-2-fluorocyclopropyl]-4,5-diphenyl-2-oxalidinone.
标题合成是通过(4R,5S)-4,5-二苯基-3-乙烯基-2-恶唑烷酮,手性和构象刚性的N-乙烯基氨基甲酸酯的非对映体选择性环丙烷化,与锌-单氟碳烯酮然后氢解生成的( 4R,5S)-3-[((1R-2S)-2-氟环丙基] -4,5-二苯基-2-恶唑烷酮。