In this work, we reported an anthracene carboxyimide-based chemosensor (AC-Phos) for colorimetric and ratiometric fluorescence detection of highly toxic phosgene, which displayed rapid response (<5 min) toward phosgene with a high selectivity and a low detection limit (2.3 nM). Furthermore, a facile testing membrane with a polystyrene immobilizing chemosensor has been fabricated for real-time visualizing of gaseous phosgene.

No abstract

No abstract

A colorimetric and fluorogenic sensor exhibiting rapid, specific and sensitive detection of potentially toxic nitrite in food is described.

The copper‐catalyzed highly selective protoboration of CF3‐containing conjugated diene with proton source and B2Pin2 has been developed. This chemistry could suppress the well‐known defluorination and provide borated reagents with an intact CF3‐group. Further studies indicated that the functional group tolerance of this chemistry is very well, and the products could be used as versatile precursors for different types of transformations. Importantly, using chiral diphosphine ligand, we have developed the first example for using such starting material to synthesis allylic boron‐reagents which bearing a CF3‐containing chiral center. Notably, the reaction mechanism was intensively studied by DFT calculations, which could reveal the reason that defluorination was inhibited.

No abstract

No abstract

The nickel-catalyzed reductive cross-coupling reaction of acyl chloride with racemic secondary α-trifluoromethyl bromide has been developed. By this chemistry, a series of structurally interesting chiral α-CF3 carbonyl compounds could be accessed with great enantioselectivity and good functional group tolerance. The study of late-stage transformation indicated that this chemistry could be used as the robust method to prepare products that contain a bioactive motif. Furthermore, the importance of the α-trifluoromethyl group to this reaction has been illustrated by control experiments.