Silica supported polyphosphoric acid (PPA-SiO_2): an efficient and reusable heterogeneous catalyst for the one-pot synthesis of \alpha -amino phosphonates
摘要:
在 80 °C 无溶剂条件下,在 PPA-SiO_2 存在下,采用醛、胺和三烷基膦酸盐之间的单锅三组分缩合反应,描述了制备 \alpha -氨基膦酸盐的高效绿色方案。本方法具有产率高、反应时间短、无毒、可回收和催化剂可重复使用等优点。
Silica supported polyphosphoric acid (PPA-SiO_2): an efficient and reusable heterogeneous catalyst for the one-pot synthesis of \alpha -amino phosphonates
An efficient green protocol is described for the preparation of \alpha -amino phosphonates, employing a one-pot three-component condensation reaction between aldehydes, amines, and trialkyl phosphites in the presence of PPA-SiO_2 under solvent-free conditions at 80 °C. The present procedure offer advantages such as high to excellent yields, short reaction time, inexpensiveness, recovery, and reusability of catalyst.
在 80 °C 无溶剂条件下,在 PPA-SiO_2 存在下,采用醛、胺和三烷基膦酸盐之间的单锅三组分缩合反应,描述了制备 \alpha -氨基膦酸盐的高效绿色方案。本方法具有产率高、反应时间短、无毒、可回收和催化剂可重复使用等优点。
Al(H<sub>2</sub>PO<sub>4</sub>)<sub>3</sub>as an Efficient and Reusable Catalyst for One-pot Three-component Synthesis of<i>α</i>-Amino Phosphonates under Solvent-free Conditions
Synthesis of α‐amino phosphonates is described under solvent‐free conditions at 100°C from reaction between aldehydes and amines in the presence of trialkyl phosphites using Al(H2PO4)3 as an efficient and reusable heterogeneous catalyst. The advantages of this procedure are short reaction time, flexibility and having high to excellent yields.
描述了在无溶剂条件下,在亚磷酸三烷基酯存在下,使用Al(H 2 PO 4)3作为有效且可重复使用的多相催化剂,醛与胺之间的反应,在无溶剂条件下合成α-氨基膦酸酯的方法。该方法的优点是反应时间短,柔韧性好并且产率高至优异。
One-Pot, Three-Component Synthesis of <font>α</font>-Amino Phosphonates Using NaHSO<sub>4</sub>-SiO<sub>2</sub> as an Efficient and Reusable Catalyst
environmentally benign method has been developed for the synthesis of α-aminophosphonates. One-pot, three-component reaction of aldehyds, amines, and trialkylphosphite in the presence of silica-supported sodium hydrogen sulfate (NaHSO4-SiO2) as an inexpensive and reusable catalyst under solvent-free conditions at 80 °C affords the corresponding α-aminophosphonates in good yields and short reaction times. GRAPHICAL
摘要 已开发出一种简单、高效且环境友好的合成α-氨基膦酸酯的方法。在二氧化硅负载的硫酸氢钠 (NaHSO4-SiO2) 作为廉价且可重复使用的催化剂存在下,在 80 °C 无溶剂条件下,醛、胺和亚磷酸三烷基酯的一锅三组分反应得到相应的 α-氨基膦酸盐,收率高,反应时间短。图形概要
Xanthan Sulfuric Acid as an Efficient Biodegradable and Recyclable Catalyst for the One-Pot Synthesis of α-Amino Phosphonates
convenient and efficient procedure for the synthesis of α‐amino phosphonates by a one‐pot, three‐component condensation of aldehydes, amine, and diethyl phosphite in the presence of xanthan sulfuricacid as a bio‐supported catalyst under solvent‐free conditions has been developed. A wide range of α‐amino phosphonates have been obtained in high to excellent yields. Furthermore, the catalyst can be recovered