let me preface this by saying yes, i know @WillD made a lovely thread, but these links go "further back" and start the process earlier. his synth starts with MDP2P which is in the second to last/last links on this list. i just wanted to put that out there so this doesn't get considered redundant...
Stage 1. Extraction of Piperine
Starting reagents and materials:
400 ml of 88% ethanol
300 g of ground black pepper
Potassium hydroxide (KOH)
180 mm diameter filter papers
Soxhlet extractor (500 ml)
Measuring cups
Funnel
Heater
Pour 300 ml of 88% ethanol into a 500 ml flask.
Place 60 g of...