Aromatic Nucleophilic Nitrogen-Nitrogen Exchange Reaction of<i>N,N</i>-Dimethyl-2,4-bis(trifluoroacetyl)-1-naphthylamine with Amino Acid Derivatives: A Facile Synthesis of Fluorine-Containing 1<i>H</i>-Benzo[<i>g</i>]indolines and 1<i>H</i>-Benzo[<i>g</i>]indoles
作者:Masaru Hojo、Ryōichi Masuda、Etsuji Okada、Hiroshi Miya
DOI:10.1055/s-1989-27315
日期:——
Aromatic nucleophilic nitrogen-nitrogen exchange reaction of N,N-dimethyl-2,4-bis(trifluoroacetyl)-1-naphthylamine 1 with some amino acid derivatives gives the corresponding N-[2,4-bis(trifluoroacetyl)-1-naphthyl]amino acid derivatives 2a-d in excellent yields. Basecatalyzed cyclization affords fluorine-containing 1H-benzo[g]indolines (2,3-dihydro-1H-benzo[g]indoles) 3a-d in high yields. Further conversion of 3a into 1H-benzo[g]indoles 4,5 is also described.
N,N-二甲基-2,4-双(三氟乙酰基)-1-萘胺1与一些氨基酸衍生物进行芳香亲核氮-氮交换反应,以优异的产率得到相应的N-[2,4-双(三氟乙酰基)-1-萘基]氨基酸衍生物2a-d。在碱催化下进行环化反应,以高产率得到含氟的1H-苯并[g]吲哚啉(2,3-二氢-1H-苯并[g]吲哚)3a-d。进一步将3a转化为1H-苯并[g]吲哚4和5的过程也有所描述。