作者:Patricia Llanes、Carles Rodríguez-Escrich、Sonia Sayalero、Miquel A. Pericàs
DOI:10.1021/acs.orglett.6b03156
日期:2016.12.16
A set of six solid-supported diarylprolinol catalysts (varying on the anchoring strategy and the type of polymeric support) has been prepared and applied to the enantioselective cyclopropanation reaction. The selected candidate allows implementation of a long flow experiment (48 h) and generates a library of 12 cyclopropanes by sequential flow experiments. The mildness and utility of the method have
Superparamagnetic Nanoparticle-Supported (S)-Diphenyl- prolinol Trimethylsilyl Ether as a Recyclable Catalyst for Asymmetric Michael Addition in Water
作者:Bang Gen Wang、Bao Chun Ma、Qiong Wang、Wei Wang
DOI:10.1002/adsc.201000508
日期:2010.11.22
A new superparamagneticnanoparticle-supported (S)-diphenylprolinol trimethylsilylether (Jørgensen–Hayashi catalyst) was synthesized and applied for the asymmetricMichaeladdition of aldehydes to nitroalkenes in water, which gives products in moderate to good yields (up to 96%), good enantioselectivity (up to 90% ee) and diastereoselectivities (up to 99:1). The immobilized catalyst could be easily
A heterogeneous layered bifunctional catalyst for the integration of aerobic oxidation and asymmetric C–C bond formation
作者:Hiroyuki Miyamura、Gerald C. Y. Choo、Tomohiro Yasukawa、Woo-Jin Yoo、Shu Kobayashi
DOI:10.1039/c3cc46204h
日期:——
The design and synthesis of a heterogeneous bifunctional chiral catalyst for the sequential aerobic oxidationâasymmetric Michael reactions between primary allylic alcohols and dibenzyl malonate are described. Interestingly, we found that layering bimetallic nanoparticles over the organocatalyst, within the chiral composite material, is crucial for catalytic activity.