Beiträge zur Chemie des Bors, XCVII Eine Untersuchung des Substituentenaustausches zwischen Trithiadiborolanen / Contributions to the Chemistry of Boron, XCVII An Investigation of the Substituent Exchange between Trithiadiborolanes

The substituent exchange between trithiadiborolanes has been studied by the ¹⁰B isotope technique. A simultaneous exchange of the substituent and the boron atom to which the substituent is bound was observed. This result is explained by a mechanism comprising a conformationally flexible ten membered ring as an intermediate. The exchange occurs not only between differently substituted trithiadiborolanes but also between trithiadiborolanes of one sort.