https://www.selleckchem.com/pr....oducts/Nicotinamide(
We report on the implementation of the concept of a photochemically elicited two-carbon homologation of a π -donor -π -acceptor substituted chromophore by triple bond insertion. Implementing a phenyl connector between the slide-in module and the chromophore enabled the synthesis of cylohepta[ b ]indole-type building blocks by a metal-free annulative one-pot two-carbon ring expansion of the five-membered chromophore. Post-irradiative structural elaboration provided founding members of the indolo[2,3- d ]tropone family o
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