Cover Feature: Catalyst-Free Three-Component Petasis Reactions Accelerated in Microdroplets: Reaction Optimization and Senstive Detection by Mass Spectrometry (Anal. Sens. 6/2023)

The cover feature image illustrates two mail devices, drones (representing sprayed microdroplets) and in-person (representing bulk phase), to deliver a letter (representing the Petasis reaction involving aldehydes, arylboronic acids and amines) in sharply different efficiencies. This study supplies not only a mild, efficient and environmentally friendly methodology to constructing aryl amines in organic community but also a useful derivatization strategy for highly sensitive mass spectrometric detection of arylboronic acids and aryl aldehydes. More information can be found in the Research Article by Heyong Cheng, Jiannan Sun, and co-workers.