A Facile and Convenient Synthetic Method for<i>N</i>-β-Trifluoroacetylvinyl Amino Acid Esters, α-Aminoacetophenones and Aminoacetonitriles as Potentially Useful Precursors of Fluorine-Containing Pyrroles
作者:Etsuji Okada、Ryoichi Masuda、Masaru Hojo、Ryohei Inoue
DOI:10.1055/s-1992-26155
日期:——
N-(4,4,4-Trifluoro-3-oxo-1-butenyl) amino acid esters, α-aminoacetophenones and aminoacetonitriles 3 and 4 are easily obtained in excellent yields by O-N exchange reaction of 4-alkoxy-1,1,1-trifluoro-3-alken-2-ones 1 and 2 with some amino acid esters, α-aminoacetophenone and aminoacetonitrile. Cyclodehydration of some resultant products into fluorine-containing pyrroles is also described.
N-(4,4,4-三氟-3-氧代-1-丁烯基)氨基酸酯、α-氨基乙酰苯和氨基乙腈3和4可以通过4-烷氧基-1,1,1-三氟-3-烯-2-酮1和2与某些氨基酸酯、α-氨基乙酰苯和氨基乙腈的O-N交换反应以优异的产率轻松获得。本文还描述了某些产物缩合成含氟吡咯的方法。