<h2>Abstract</h2>
Cocatalyzed by Rh2(Oct)4 (10 mol%)/CuI (10 mol%) and BINAP (20 mol%) in 1,2-dichloroethane at 80 °C, the cascade cyclization between azidobenzamides and diazopyrazolones underwent readily and furnished spiroquinazolinones in reasonable chemical yields. The chemical structure of one compound has been confirmed by X-ray diffraction analysis, and the others are suggested by inference.

Artikel

Rh/Cu‐Cocatalyzed Cascade Cyclization Between Azidobenzamides and Diazopyrazolones for Synthesis of Spiroquinazolinones

Abstract Cocatalyzed by Rh2(Oct)4 (10 mol%)/CuI (10 mol%) and BINAP (20 mol%) in 1,2-dichloroethane at 80 °C, the cascade cyclization between azidobenzamides and diazopyrazolones underwent readily and furnished spiroquinazolinones in reasonable chemical yields. The chemical structure of one...

A novel fluorescent probe, NAP-TPP, derived from 1,4-naphthalic anhydride with an iminophosphorane group, enables sequential detection of Sn2⁺ and moisture. It shows a clear fluorescence/colorimetric response upon Sn2⁺ binding and acts as a ratiometric moisture sensor. NAP-TPP also images Cu2⁺ in cells, highlighting its dual functionality and potential for bioanalytical and environmental applications.


 
<h2>Abstract</h2>
A novel small-molecule fluorescent probe, NAP-TPP, derived from 1,4-naphthalic anhydride and incorporating an iminophosphorane functionality, has been developed for the sequential detection of Sn2⁺ ions and moisture. This work represents the first investigation into the metal ion complexation capabilities of fluorescent iminophosphorane derivatives for sensing applications. Upon coordination with Sn2⁺, the probe undergoes a distinct fluorescence change accompanied by a visible colorimetric shift, indicative of complex formation. The probe exhibits excellent aqueous stability and further demonstrates the ability to visualize Cu2⁺ ions in various cultured cell lines. Notably, the Sn2⁺ complex formed under anhydrous conditions functions as a highly sensitive ratiometric fluorescent sensor for trace levels of moisture. Collectively, these findings establish NAP-TPP as an effective dual-purpose sensing platform for detecting Sn2⁺ ions and monitoring moisture.

Artikel

Rh/Cu‐Cocatalyzed Cascade Cyclization Between Azidobenzamides and Diazopyrazolones for Synthesis of Spiroquinazolinones

Abstract

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A Small‐Molecule Fluorescent Probe Featuring an Iminophosphorane Linker for Sequential Detection of Sn2⁺ Ions and Water with Bioimaging Applications

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