Enantioselective Hydroformylation of Aniline Derivatives
摘要:
We have developed a ligand that reversibly binds to aniline substrates, allowing for the control of regioselectivity and enantioselectivity in hydroformylation. In this paper we address how the electronics of the aniline ring affect both the binding of the substrate to the ligand and the enantioselectivity in this reaction.
Enantioselective Hydroformylation of Aniline Derivatives
作者:Candice L. Joe、Kian L. Tan
DOI:10.1021/jo201328d
日期:2011.9.16
We have developed a ligand that reversibly binds to aniline substrates, allowing for the control of regioselectivity and enantioselectivity in hydroformylation. In this paper we address how the electronics of the aniline ring affect both the binding of the substrate to the ligand and the enantioselectivity in this reaction.
Second-Harmonic Generation from Single and Mixed Crystals of<i>p</i>-Nitroaniline and Its Derivatives
Noncentrosymmetric and thermostable single crystals (space group of Pna21) of N-(2-butenyl)-p-nitroaniline were obtained by slow crystallization from solution, with SH activities of 150—200 × urea measured by the SHG powder method with a 1064 nm Nd : YAG laser source. Single crystals of N-(3-methyl-2-butenyl)-, N-(2-propenyl)-, or N-butyl-p-nitroaniline showed nil SH activities. On the other hand, mixed crystals of these derivatives with p-nitroaniline showed much higher SH activities (up to 2000), though thermally not stable.