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通过合作催化实现内部1,3-基化

Ziyong Wang¹, Chen Zhang², Jason Wu¹

¹Department of Chemistry, Boston College, Chestnut Hill, Massachusetts 02467-3860, United States.

Journal of the American Chemical Society

|March 2, 2023

概括

这项研究引入了一种新的合作催化剂系统,用于内部1,3-基化. 这种利用易斯酸的新方法促进了外层氧化反应步骤,产生具有独特光物理性质的多功能dieneyne synthons.

科学领域:

有机化学
催化剂
材料科学

背景情况:

内部的1,3-是有价值的有机构建块.
水基化反应对于碳-碳键的形成至关重要.
为选择性转化开发高效的催化系统是一个持续的挑战.

研究的目的:

开发一种新型的催化系统,用于内部1,3的转化.
研究易斯酸在促进外层氧化反应的作用.
合成和描述由此产生的交叉结合的二烯,并探索它们的光物理性质.

主要方法:

采用了一种合作催化剂系统,其中包括Pd{0}/Senphos复合物,tris{0}/pentafluorophenyl) (易斯酸),铜化物和一种氨基基.
反应条件优化了内部1,3-的转化.
使用光谱技术 (例如NMR,质谱) 进行了合成交叉结合的二烯烯的特征分析,并研究了它们的光物理性质.

主要成果:

合作催化剂系统成功催化了内部1,3的转.
易斯酸成分被证明通过外层氧化途径促进反应,这是此前未报告的转化机制.
合成了一系列交叉结合的二烯烯,作为有机合成中的多功能合成子.
发现dieneynes的光物理性质取决于结合系统中的供体/受体替代物的排列.

结论:

已经开发出一种新且高效的合作催化系统.
这项研究强调了易斯酸在促进这种反应的外层氧化步骤中的前所未有的作用.
合成的二烯具有可调节的光物理特性,为材料科学和有机电子领域的应用开辟了道路.

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