Question: how to quench n buli?
Answer: Open the desiccator and empty the syringe containing dilute tBuLi into a beaker of isopropanol to quench the reagent. Rinse the syringe several more times with isopropanol. Store the reaction flask at -30 °C overnight, after which time white powdery solid of [LiNHtBu]8 are observed.