Measured as first-order decomposition rate constant for tetralin hydroperoxide. Measured as cis-2, 3-epoxy-lin hydroperoxide present. octane. Same absolute decomposition rate constant as for tetralin hydroperoxide with no additive. tached to boron. It was also noted that bulky substituents about the boron atom extended catalytic lifetimes, apparently owing to steric inhibition of alcoholysis and concurrent catalyst deactivation by the reaction ...