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Communication | Regular issue | Vol 87, No. 3, 2013, pp.547-550
Published online, 31st January, 2013
DOI: 10.3987/COM-12-12640
Novel Synthesis of Thioalkoxy-Substituted Oxa[9]helicenes by the Reaction of Helical Quinones with Thiols

Mohammad Salim, Takao Kimura, and Michinori Karikomi*

*Department of Material and Environmental Chemistry, Faculty of Engineering, Utsunomiya University, 7-1-2, Yoto, Utsunomiya, Tochigi 321-8585, Japan

Abstract

The reaction of helical quinone with thiols in the presence of Brønsted acid such as HCl, para-toluene sulfonic acid (pTSA), Yb(OTf)3·3H2O or BF3·OEt2 to form resulted in the formation of thioalkoxy-substituted oxa[9]helicenes in moderate to good yields.