Mannich Synthesis of Acetylenic Amino Alcohols in Aqueous Ionic Liquids
作者:Nina I. Simirskaya、Nikolai V. Ignat’ev、Michael Schulte、Sergei G. Zlotin
DOI:10.1016/j.mencom.2012.11.013
日期:2012.11
Terminal alkynols react with formaldehyde and secondary amines in aqueous ionic liquid [emim]HSO4-, in the presence of Cu(OAc)(2) to afford the corresponding 1-(alpha-hydroxyalkyl)- or 1-(beta-hydroxyalkyl)-2-(aminomethyl)acetylenes in better yields in comparison with the reaction in conventional organic solvents. The catalytic system can be easily recovered and recycled.