LiClO4-Induced Mannich Reaction − Diastereo- and Enantioselective Synthesis of β-Amino Ketones by Addition of Enamines, Imines or Silylenolethers to Aldehydes and Dialkyltrimethylsilylamines
作者:Afshin Zarghi、M. Reza Naimi-Jamal、Sarah A. Webb、Said Balalaie、M. Reza Saidi、Junes Ipaktschi
LiClO4-mediated one-pot reactions of aldehydes with (trimethylsilyl)dialkylamines 2, 5 or 19 and C nucleophiles such as enamines 3, 10 and 12, imines 7 and 11 or (trimethylsilyl)enol ethers 8 and 9 afforded the corresponding aminoalkylation products in high yields. Whereas by using aromatic aldehydes, such as benzaldehyde, pyridine-3-carbaldehyde or thiophene-2-carbaldehyde, high diasteroselectivity