| Abstract: | β-(1-Benzotriazolyl)ethyl dibutyl phosphate and the 2-benzotriazolyl analog were prepared from dibutyl phosphite and 1- and 2-(β-hydroxyethyl)benzotriazoles, respectively. Dialkyl β-(N-benzotriazolyl) ethylphosphonates were prepared from the corresponding dialkyl β-bromoethylphosphonates. In both types of compounds, elimination of benzotriazole occurs in base; interestingly, such elimination is significantly faster in each series for the 2-substituted benzotriazole than for the corresponding 1-isomer. |
