Fig. 3: Two-pot synthesis and derivatization of aza-oxa-dehydro[7]helicenes. | Communications Chemistry

Fig. 3: Two-pot synthesis and derivatization of aza-oxa-dehydro[7]helicenes.

From: Electrochemical synthesis of heterodehydro[7]helicenes

Fig. 3

A Synthesis of dehydrohelicene 3ba from commercially available substrates. B AlCl3- medicated deprotection of Bn- group followed by Pd-catalyzed N-arylation. C Basic hydrolysis of cyano group to afford the corresponding carboxylic acid. D Demethylation of dehydrohelicene 3pa to give the corresponding circulene 8.

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