Bulky Selenium Ligand Stabilized
<i>Trans</i>
‐Palladium Dichloride Complexes as Catalyst for Silver‐Free Decarboxylative Coupling of Coumarin‐3‐Carboxylic Acids
作者:Neha Meena、Sunil Kumar、Vikki N. Shinde、S. Rajagopala Reddy、Himanshi、Nattamai Bhuvanesh、Anil Kumar、Hemant Joshi
DOI:10.1002/asia.202101199
日期:2022.2
chlorine atom through Cl−Pd−Cl rotor. The coalescence of proton signals at elevated temperatures shows selenium inversion in the molecular rotors. The molecular rotors showed excellent efficiency as catalyst for decarboxylative Heck-coupling reaction.
alkylaminyl radical formation and maintain the nucleophilicity of fluoride ion. This protocol exhibits excellent functional-group tolerance toward various aryl and unactivated alkenes, furnishing the corresponding β-fluoroamines with high regioselectivity. Mechanistic investigation reveals an aziridinium intermediate via a radical pathway. The syntheticutility of this transformation was demonstrated by
trifluoromethyl iodide, and perfluoroalkyl iodides. The synthetic value of this method has been demonstrated by the transformations of various substrates containing drug/natural product skeletons, gram scale reactions, and further derivatizations of the fluorodithiocarbamate products. This work features an atom economical protocol that is simple to operate, does not require any additives or strong bases