Abstract

A facile decarbonylation reaction of a variety of aromatic and heteroaromatic aldehydes using maghemite-supported palladium catalyst has been developed. The magnetic properties of catalyst facilitated an easy and efficient recovery of the catalyst from the reaction mixture using an external magnet. It was found that the catalyst could be reused up to four consecutive catalytic runs without a significant change in activity. In addition, the catalyst was also very effective in the dehalogenation of aryl halides. This is the first report on efficient utilization of directly immobilized Pd on maghemite in decarbonylation and dehalogenation reactions.

A facile decarbonylation reaction of a variety of aromatic and heteroaromatic aldehydes using maghemite-supported palladium catalyst has been developed. The magnetic properties of catalyst facilitated an easy and efficient recovery of the catalyst from the reaction mixture using an external magnet. It was found that the catalyst could be reused up to four consecutive catalytic runs without a significant change in activity. In addition, the catalyst was also very effective in the dehalogenation of aryl halides. This is the first report on efficient utilization of directly immobilized Pd on maghemite in decarbonylation and dehalogenation reactions.

中文翻译：

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磁铁矿负载钯催化剂催化芳香醛的脱羰作用和卤代芳烃的脱卤作用

摘要

已经开发了使用磁赤铁矿负载的钯催化剂的多种芳族和杂芳族醛的简便脱羰反应。催化剂的磁性有助于使用外部磁体从反应混合物中容易且有效地回收催化剂。发现该催化剂可以重复使用多达四个连续的催化运行，而活性没有显着变化。另外，该催化剂在芳基卤化物的脱卤中也非常有效。这是关于在脱羰和脱卤反应中有效利用直接固定在赤铁矿上的Pd的第一份报告。

已经开发了使用磁赤铁矿负载的钯催化剂的多种芳族和杂芳族醛的简便脱羰反应。催化剂的磁性有助于使用外部磁体从反应混合物中容易且有效地回收催化剂。发现该催化剂可以重复使用多达四个连续的催化运行，而活性没有显着变化。另外，该催化剂在芳基卤化物的脱卤中也非常有效。这是关于在脱羰和脱卤反应中有效利用直接固定在赤铁矿上的Pd的第一份报告。