Chiral bowl-shaped thiazole-embedded B( iii )-azatriphyrins(2.1.1): a nonaromatic platform via triple core-modification

-bridge. These macrocycles are nonaromatic and adopt chiral, bowl-shaped geometries that form stable enantiomers exhibiting distinct circular dichroism signals. Their optical spectra show a blue-shifted high-energy absorption band and a red-shifted lower-energy absorption band, while electrochemical studies reveal tunable redox properties. This work provides a versatile strategy for constructing core-modified, contracted porphyrinoids as a promising platform for chiral NIR-active dyes.