Palladium-Catalyzed One-Pot Synthesis of C2-Quaternary Indolin-3-ones via 1<i>H</i>
-indole-3-sulfonates Generated in Situ from 2-Alkynyl Arylazides and Sulfonic Acids
A novel method for the synthesis of C2‐quaternary indole‐3‐ones via palladium‐catalyzedone‐pot transformation of 2‐alkynylarylazides is described. The reaction produced in moderate to excellent yields under mild conditions. This novel rearrangement of 1‐H‐indole‐3‐sulfonates represents an important contribution to the application of aryl sulfonates.
Pd‐Catalyzed One‐Pot Insertion Reaction of Cyclic
<i>C</i>
‐Acylimines into Carbon‐Carbon σ‐Bonds for the Synthesis of Polyfunctional Indolin‐3‐ones from 2‐Alkynyl Arylazides and Aryl Ketones
A method to prepare polyfunctional indolin‐3‐ones by Pd‐catalyzedone‐pot insertion reaction of cyclic C‐acylimines into carbon‐carbon σ‐bonds is described. The reaction was accomplished in good to excellent yields under mild reaction conditions.