• Reactant for demethylation reactions using ionic liquids under microwave irradiation1 • Reactant for preparation of pyrazinoindoledione via Ugi reaction and microwave-assisted cyclization2 • Reactant for preparation of isoquinolinecarboxamides and their derivatives as opioid receptor antagonists3 • Synthetic intermediate for preparation of indole fatty alcohol derivatives4 • Reactant for preparation of acylaminoalkylindoles as MT2-selective melatonin antagonists5