Synthesis of 2-Arylpiperidines via Pd-Catalyzed Arylation of Aza-Achmatowicz Rearrangement Products with Arylboronic Acids
作者:Guodong Zhao、Daniel P. Canterbury、Alexandria P. Taylor、Xiayun Cheng、Peter Mikochik、Scott W. Bagley、Rongbiao Tong
DOI:10.1021/acs.orglett.9b04220
日期:2020.1.17
aza-Achmatowicz rearrangement products with arylboronic acids is achieved, providing versatile 2-aryldihydropyridinones for facile synthesis of highly functionalized 2-arylpiperidines. Key to this arylation is the use of non-phosphine-ligand palladium precatalyst. The substrate scope is demonstrated with >26 examples, and the utility of 2-aryldihydropyridinones is illustrated by the synthesis of a small
实现了Aza-Achmatowicz重排产物与芳基硼酸的第一个Pd催化的芳基化反应,从而提供了通用的2-芳基二氢吡啶酮类化合物,可轻松合成高度官能化的2-芳基哌啶。芳基化的关键是使用非膦配体钯预催化剂。用> 26个实例证明了底物的范围,并且通过合成少量的在任何碳原子上具有取代基或官能团的2-芳基哌啶以及两个NK1受体拮抗剂的合成,说明了2-芳基二氢吡啶酮的用途。 (+)-CP-999,94和(+)-L-733,060。