Homologation of Aryl Aldehydes Using Nitromethane as a C1 Source Enabled by Nitrogen-Doped Carbon-Supported Palladium Catalysts
作者:Tomohiro Yasukawa、Karin Sakamoto、Yasuhiro Yamashita、Shu̅ Kobayashi
DOI:10.1021/acscatal.2c01008
日期:——
Homologation of aryl aldehydes provides useful synthetic intermediates, but it requires multistep reactions and generates significant amounts of waste. We considered such reactions using nitromethane as a C1 source through nitroolefin formation, partial hydrogenation to oximes, and hydration of oximes; however, the control of selectivity in the second reaction is challenging. To achieve this pathway
芳基醛的同系化提供了有用的合成中间体,但它需要多步反应并产生大量废物。我们考虑了使用硝基甲烷作为 C1 源通过硝基烯烃形成、部分氢化成肟和肟水合的反应;然而,第二反应中选择性的控制具有挑战性。为了实现这一途径,开发了用于选择性氢化的氮掺杂碳嵌钯纳米颗粒催化剂。我们发现氮掺杂剂的存在有效地调整了催化活性,使其在环境压力下表现出几乎完美的选择性、高活性和可重复使用性。然后,我们在批处理和流动系统中进行了三步同源化反应,只需要一个纯化步骤。