Following the establishment of the product scope our attention moved to synthesis on the preparative scale. Through using a calibration curve, we were able to determine conditions that would yield piperidines and azepanes in high conversion, though we were not able to produce pyrroles or azocanes at conversions that were synthetically useful. Preparative scale reactions were performed on a 1 mmol scale with N-heterocycle products isolated by distillation (Scheme 2). Scheme 2. Preparative scale AcCo6 AdRedam catalysed amine terminal diol annulation.