Carbonyl Propargylation and Allenylation with 2-Propynyl Mesylates, Tin(IV) Iodide, and Tetrabutylammonium Iodide Controlled by Either a Steric Effect or Coordination Effect - Masuyama, Yoshiro; Yamazuki, Ryouichi; Ohtsuka, Masaru; Kurusu, Yasuhiko (Synlett, 2006)