Synthesis of Novel Derivatives of (1S,4S)-2,5-Diazabicyclo[2.2.1]heptane and Their Evaluation as Potential Ligands in Asymmetric Catalysis
作者:Roberto Melgar-Fernández、Rodrigo González-Olvera、J. Luis Olivares-Romero、Vianney González-López、Leticia Romero-Ponce、María del Refugio Ramírez-Zárate、Patricia Demare、Ignacio Regla、Eusebio Juaristi
DOI:10.1002/ejoc.200700785
日期:2008.2
for the enantioselective addition of diethylzinc to aldehydes and as chiral Lewis acid activators in the asymmetric Diels–Alder reaction. In the former system, diamine 30 induced up to 92 % enantiomeric excess in the formation of (S)-phenyl ethyl carbinol, whereas in the case of the cycloaddition reaction between cyclopentadiene and 3-acryloyloxazolidin-2-one the catalytic complex formed between dimeric