A concise synthesis of novel naphtho[a]carbazoles and benzo[c]carbazoles

Abstract Starting from simple indole precursors the synthesis of naphtho[ a ]carbazoles and benzo[ c ]carbazoles is described. Key steps include the use of the Suzuki–Miyaura reaction to afford 2- or 3-aryl substituted indoles, as well as a potassium t -butoxide and light assisted aromatic ring-forming reaction.