Synthesis of 4-amino-substituted but-2-en-4-olides
作者:M. V. Mavrov、L. D. Konyushkin、N. I. Simirskaya、S. G. Zlotin
DOI:10.1007/s11172-006-0201-7
日期:2005.12
Previously unknown 4-amino derivatives of spiro-annelated Δ2-butenolide were synthesized by the addition of various amines at the activated triple bond of 4-hydroxy-2-alkynoic esters.
Unprecedented acceleration of the domino reaction between methyl 4-hydroxyalk-3-ynoates and amines in ionic liquids
作者:Nina I. Simirskaya、Nikolai V. Ignat’ev、Michael Schulte、Sergei G. Zlotin
DOI:10.1016/j.mencom.2011.03.012
日期:2011.3
Reaction between methyl 4-hydroxyalk-3-ynoates and amines leading to 4-aminofuran-2(5H)-ones is significantly accelerated in ionic liquids, which can be recycled at least five times.