Kimihiro Komeyama,à Keita Takahashi, and Ken Takakià Department of Chemistry and Chemical Engineering, Graduate School of Engineering, Hiroshima University, 1-4-1 Kagamiyama, Higashi-Hiroshima 739-8527 ... (Received March 10, 2008; CL-080264; E-mail: kkome@hiroshima-u.ac.jp) ... Bi(OTf)3 was found to be a good catalyst for intramolecular addition of carboxylic acids to alkynes (hydro-oxycarbonyla- tion), which afforded the ...