Palladium Nanoparticles Anchored on Magnesium Organosilicate: An Effective and Selective Catalyst for the Heck Reaction,Synthesis

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Palladium Nanoparticles Anchored on Magnesium Organosilicate: An Effective and Selective Catalyst for the Heck Reaction
Synthesis ( IF 2.6 ) Pub Date : 2020-10-22 , DOI: 10.1055/s-0040-1705938
Nelson Luís C. Domingues ₁ , Beatriz F. dos Santos ₁ , Beatriz A. L. da Silva ₁ , Aline R. de Oliveira ₂ , Maria H. Sarragiotto ₂ , Andrelson W. Rinaldi ₂

Affiliation

Abstract

A new and effective palladium catalyst supported on a magnesium organosilicate for application in the Heck reaction is presented. A group of compounds comprising 22 examples were synthesized in moderate to high yields (up to 99%) within a short time. The palladium supported on magnesium organosilicate catalyst was characterized as an amorphous solid by SEM, containing around 33% of palladium inside the solid, and even with this low quantity of palladium, the catalyst was very efficient in the Heck reaction. Besides, based on the Scherrer equation, the crystallite size of the synthesized palladium nanoparticles was ultrasmall (around 1.3 nm). This strategy is a simple and efficient route for the formation of C–C bonds via the Heck cross-coupling reaction.

Publication History

Received: 25 June 2020

Accepted after revision: 16 September 2020

Publication Date:
22 October 2020 (online)

Georg Thieme Verlag KG
Rüdigerstraße 14, 70469 Stuttgart, Germany

中文翻译：

锚固在有机硅酸镁上的钯纳米粒子：Heck反应的有效和选择性催化剂。

摘要

提出了一种新型有效的负载在有机硅酸镁上的钯催化剂，用于Heck反应。在短时间内以中等至高收率（高达99％）合成了包含22个实例的一组化合物。通过SEM将负载在有机硅酸镁催化剂上的钯表征为无定形固体，该固体内部包含约33％的钯，并且即使具有这种少量的钯，该催化剂在Heck反应中也是非常有效的。此外，基于Scherrer方程，合成的钯纳米颗粒的微晶尺寸非常小（约1.3nm）。该策略是通过Heck交叉偶联反应形成C–C键的简单有效途径。