Magnetic CoFe2O4 nanoparticle immobilized N-propyl diethylenetriamine sulfamic acid as an efficient and recyclable catalyst for the synthesis of amides via the Ritter reaction
A magneticCoFe2O4nanoparticle immobilized diamine-N-sulfamic acid (CoFe2O4@SiO2–DASA) was synthesized and used as efficient heterogeneous catalyst for the synthesis of amides via the Ritter reaction under solvent-free conditions. The magnetic nanocatalyst could be readily recovered by applying an external magnet and recycled several times without considerable loss of its catalytic activity.
合成了磁性CoFe 2 O 4纳米颗粒固定化的二胺-N-氨基磺酸(CoFe 2 O 4 @SiO 2 -DASA),并用作无溶剂条件下通过Ritter反应合成酰胺的有效多相催化剂。通过施加外部磁体可以容易地回收磁性纳米催化剂,并循环几次,而不会显着降低其催化活性。
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作者:Upadhyaya, A. K.、Mehrotra, K. N.
DOI:——
日期:——
An atom efficient and solvent-free synthesis of structurally diverse amides using microwaves
作者:Edith Gelens、Luc Smeets、Leo A.J.M. Sliedregt、Bart J. van Steen、Chris G. Kruse、Rob Leurs、Romano V.A. Orru
DOI:10.1016/j.tetlet.2005.03.146
日期:2005.5
An array of structurally diverse amides was synthesized efficiently by combining (primary and secondary) amines and carboxylic acids in one-pot under solvent-free microwave (MW) conditions. In most cases, no racemization was observed with optically active inputs and chiral amides were obtained in high ee or de. (c) 2005 Elsevier Ltd. All rights reserved.
Wittig,G.; Hesse,A., Justus Liebigs Annalen der Chemie, 1976, p. 500 - 510
作者:Wittig,G.、Hesse,A.
DOI:——
日期:——
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