Palladium/Rhodium Cooperative Catalysis for the Production of Aryl Aldehydes and Their Deuterated Analogues Using the Water-Gas Shift Reaction.

Palladium/Rhodium Cooperative Catalysis for the Production of Aryl Aldehydes and Their Deuterated Analogues Using the Water-Gas Shift Reaction.
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DOI:
10.1002/anie.201806148
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发表时间:
2018-08-06
期刊:
Angewandte Chemie (International ed. in English)
影响因子:
--
通讯作者:
Denmark SE
Denmark SE
中科院分区:
其他
文献类型:
--
作者:
Ibrahim MYS;Denmark SE

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开发了一种新型的 Pd/Rh 双金属协同催化工艺,可以以中等至良好的收率实现芳基卤化物的还原羰基化。在该反应中,水是氢化物源,CO通过水煤气变换反应既充当羰基源又充当末端还原剂。 Rh 氢化物的催化生成允许选择性形成高度受阻的芳基醛,这是通过先前报道的还原羰基化方案无法获得的。此外,使用 D2O 作为具有成本效益的氘源,可以有效、选择性地合成具有氘代甲酰基的醛,而无需预先合成醛。
A novel Pd/Rh dual-metallic cooperative catalytic process has been developed to effect the reductive carbon-ylation of aryl halides in moderate to good yield. In this reaction, water is the hydride source, and CO serves both as the carbonyl source and the terminal reductant through the water-gas shift reaction. The catalytic generation of the Rh hydride allows for the selective formation of highly hindered aryl aldehydes that are inaccessible through previously reported reductive carbonylation protocols. Moreover, aldehydes with deuterated formyl groups can be efficiently and selectively synthesized using D2O as a cost-effective deuterium source without the need for presynthesizing the aldehyde.
可见光促进的镍和有机染料助催化芳基卤化物、三氟甲磺酸酯和乙烯基溴与二乙氧基乙酸作为甲酰基当量的甲酰化反应
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