Discovery of Long-Wavelength Photoactivatable Diaryltetrazoles for Bioorthogonal 1,3-Dipolar Cycloaddition Reactions

Several long-wavelength (365 nm) photoactivatable diaryltetrazoles were discovered by screening a series of substituted diaryltetrazoles and subsequently showed excellent reactivity in the photoactivated 1,3-dipolar cycloaddition reactions toward electron-deficient and conjugated alkenes in organic solvents as well as an alkene-containing protein in the aqueous buffer.