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首页> 外文期刊>RSC Advances >Silica supported palladium-phosphine as a reusable catalyst for alkoxycarbonylation and aminocarbonylation of aryl and heteroaryl iodides
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Silica supported palladium-phosphine as a reusable catalyst for alkoxycarbonylation and aminocarbonylation of aryl and heteroaryl iodides

机译：二氧化硅负载的钯膦可作为可重复使用的催化剂，用于芳基和杂芳基碘化物的烷氧基羰基化和氨基羰基化

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摘要

Silica-supported palladium phosphine complexes were prepared for alkoxycarbonylation and aminocarbonylation of aryl iodides. These catalysts were highly efficient for the carbonylation of unprotected hydroxy-aryl, amino-aryl, iodoindole and iodopyrazole. The carbonylation of unprotected iodopyrazole is challenging and their carbonylation was achieved for the first and obtained corresponding carbonylative products are biologically active. The applicability of developed protocols tolerates wide range of functional groups with excellent yields. The catalyst was easily recovered and shows significant recyclability up to five consecutive cycles without loss in its catalytic activity and selectivity. The prepared catalysts were characterized by different techniques such as FEG-SEM, EDS, FTIR, XPS and ICP-AES spectroscopy.
机译：制备了二氧化硅负载的钯膦配合物，用于芳基碘化物的烷氧基羰基化和氨基羰基化。这些催化剂对于未保护的羟基-芳基，氨基-芳基，碘吲哚和碘吡唑的羰基化非常有效。未保护的碘吡唑的羰基化具有挑战性，并且首先实现了羰基化，并且获得的相应羰基化产物具有生物活性。所开发方案的适用性以优异的产率耐受各种官能团。该催化剂易于回收，并且在多达五个连续循环中显示出显着的可回收性，而不会损失其催化活性和选择性。所制备的催化剂通过FEG-SEM，EDS，FTIR，XPS和ICP-AES光谱等不同技术进行表征。

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