convenient and efficient one-pot reductive amination of diversely substituted aldehydes catalyzed by Fe3O4@TiO2 nanoparticles and NaBH4 as a reductant in ethanol at ambient condition is reported in this work. The structural features of Fe3O4@TiO2 nanoparticles are explored by various tools like FT-IR, XRD, TEM, FE-SEM and EDX techniques. The heterogeneous nature, good catalytic potential and reusability are
本工作报道了在环境条件下,由 Fe 3 O 4 @TiO 2纳米粒子和 NaBH 4作为还原剂在乙醇中催化的不同取代醛的一锅还原胺化,操作方便且高效。Fe 3 O 4 @TiO 2的结构特征纳米粒子可通过多种工具进行探索,例如 FT-IR、XRD、TEM、FE-SEM 和 EDX 技术。多相性质、良好的催化潜力和可重复使用性是催化剂的一些重要属性。该工艺的优点是一锅反应、反应时间短、催化剂用量低、底物适用范围广、收率好、反应条件温和简单。通过1 H-NMR、13 C-NMR 和 HR-MS 谱分析确定了合成的胺衍生物的结构。 图形概要
Zinc-Catalyzed Chemoselective Reduction of Tertiary and Secondary Amides to Amines
procedures for the catalytichydrosilylation of secondary and tertiary amides under mild conditions have been developed. In the presence of inexpensive zinc catalysts, tertiary amides are easily reduced by applying monosilanes. Key to success for the reduction of the secondary amides is the use of zinc triflate and disilanes with dual SiH moieties. The presented hydrosilylations proceed with excellent