Light‐Induced Tetrazole‐Quinone 1,3‐Dipolar Cycloadditions.

Ortiz‐Rojano, Laura; Rojas‐Martín, Jaime; Rodríguez‐Diaz, Ciro; Carreño, M. Carmen; Ribagorda, Maria

Quinones were firstly used as dipolarophiles in a photoclick 1,3‐cycloaddition with 2,5‐diaryltetrazoles, as photoactivatable predipoles, providing a novel and efficient access to three types of pyrazole‐fused quinones (indazoledione derivatives). Distinctive features of this protocol include the use of light as the unique reagent and readily available, stable, and easy to handle starting materials and good to excellent yields. Photophysical and electrochemical properties of the quinones and their potential application as photoredox catalysts are also detailed.

MATERIALS handling; QUINONE derivatives; PYRROLIDINE synthesis; CATALYSTS

Chemistry - A European Journal, 2019, Vol 25, Issue 66, p15050

0947-6539

Academic Journal

10.1002/chem.201904138