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A catalyst system tunes outcomes from benzamides to indenoisoquinolines and indenoisochromenes, indicating steric control.
Tuning the Cp*Rh catalyst system switches cyclocondensation outcomes: N -alkoxy/aryl benzamides furnish indenoisoquinolines, whereas N-tert -butyl benzamides selectively deliver indenoisochromenes, revealing steric control of the final cyclisation.
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Kim et al. (2026) studied this question.
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