... WITH PYRIDINE-BORANE IN TRIFLUOROACETIC ACID Yasuo KIKUGAWA Faculty of Pharmaceutical Sciences, Josai University, 1-1 Keyakidai, Sakado-shi, Saitama 350-02 ... REFERENCES 1) ME Peach, "The Chemistry of the Thiol Group, "ed. by S. Patai, Interscience,