Synthesis of novel chiral tridentate aminophenol ligands for enantioselective addition of diethylzinc to aldehydes
作者:Xiao-Feng Yang、Takuji Hirose、Guang-You Zhang
DOI:10.1016/j.tetasy.2008.06.027
日期:2008.7
Novelchiral tridentate aminophenol ligand (S)-3a was obtained by a Mannich-type reaction of cresol, paraformaldehyde, and (S)-1-(2-methoxyphenyl)-2-methylpropan-1-amine followed by a deprotection step. This tridentate aminophenol ligand shows high yield and enantioselectivity in the diethylzincadditions to a broad range of substrates, including alkyl, aryl, and α,β-unsaturated aldehydes.