Tuning Reactivity in Pd‐catalysed C(
<i>sp</i>
<sup>3</sup>
)‐H Arylations via Directing Group Modifications and Solvent Selection
作者:Charlotte E. Coomber、Michael J. Porter、Abil E. Aliev、Peter D. Smith、Tom D. Sheppard
DOI:10.1002/adsc.202000726
日期:2020.11.18
The palladium‐catalysed sp3 C−H arylation of a selection of saturated amine scaffolds was investigated using substituted picolinamide directing groups. On the bornylamine scaffold, highly selective monoarylation takes place using unsubstituted picolinamide or 3‐methylpicolinamide, whereas a double C−H arylation occurs with other substituents present, becoming a significant product with 3‐trifluoromethylpicolinamide