Application of
$$\hbox {SiO}_{{2}}$$
SiO
2
nanoparticles as an efficient catalyst to develop syntheses of perimidines and tetraketones
作者:Heshmatollah Alinezhad、Armin Ahmadi、Parvin Hajiabbasi
DOI:10.1007/s12039-019-1607-8
日期:2019.4
SiO}_2}}\) nanoparticles (NPs) as an eco-friendly, efficient and reusable catalyst in the synthesis of 2,3-dihydro-1H-perimidines as well as tetraketones. For tetraketones syntheses, a simple tandem Knoevenagel condensation following Michael addition procedure is performed by the reaction between benzaldehydes and 5,5-dimethyl-1,3-cyclohexanediones under solvent-free condition using \(\hbox SiO}_2}}\)
摘要在本文中,我们探讨了\(\ hbox SiO} _ 2}} \)纳米颗粒(NPs)在合成2,3-二氢-1中作为一种环保,高效且可重复使用的催化剂的催化活性。H -perimidines以及四酮。对于四酮合成,通过迈克尔加成反应,通过苯甲醛与5,5-二甲基-1,3-环己二酮在无溶剂条件下使用\(\ hbox SiO} _ 2} } \) NPs是一种有效的固体催化剂。此外,对于2,3-二氢-1 H-亚氨基吡啶的合成,使用\(\ hbox SiO} _ 2}} \)在无溶剂的条件下可以实现各种醛与1,8-二氨基萘的环缩合。NP在室温下作为催化剂。结果表明,两种合成方法均具有催化作用。在这项工作中,合成了4-(2,3-二氢-1 H-嘧啶-2-基)苄腈和2-(吡啶-4-基)-2,3-二氢-1 H-嘧啶作为新化合物。另外,对\(\ hbox SiO} _ 2}} \) N