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Communication | Special issue | Vol 99, No. 2, 2019, pp.815-819
Published online, 19th December, 2018
DOI: 10.3987/COM-18-S(F)61
Synthesis of a Tetracyclic Aminobenzimidazole Derivative via Tandem Cyclization of Triphenylguanidine

Yuki Akamatsu, Shinichiro Kamino, and Daisuke Sawada*

*Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, Okayama University, 1-1-1, Tsushima-Naka, Kitai-ku, Okayama, 700-8530, Japan

Abstract

We developed a new reaction for the one-pot synthesis of a fused cyclic compound from triphenylguanidine, which was thought to be tandem cyclization, with a moderate yield. In this reaction, conditions such as the metal reagent, oxidant, solvent, and ligand affected whether single or tandem cyclization was preferred.