金催化剂上脂肪族硝基化合物与醛在氢气中选择还原耦合

摘要

采用TiO2上高度分散的金纳米粒子做催化剂，从脂肪族硝基化合物、醛和氢气可高选择性合成硝酮。与碳负载Pt催化剂相比，该催化体系上硝酮的选择性从50%增加到90%。其催化性能可有活性位结构、载体特性和反应条件精确调节。%Nitrones were synthesized in good yields directly from nitro aliphatic compounds, aldehydes, and H2 using highly dispersed gold nanoparticles on titania. The high selectivity for nitrone synthesis contrasts with the platinum supported on carbon and corresponds to an increase from roughly 50%to 90%. The catalytic performance is tuned by precise control of the structure of the active sites, the characteristics of the support and reaction conditions.