The combination of water-soluble radical initiator 2, 2'-azobis [2-(2-imidazolin-2-yl) propane](VA-061), water-soluble chain carrier 1-ethylpiperidine hypophosphite (EPHP), and surfactant cetyltrimethylammonium bromide (CTAB) was found to be the most suitable condition for effective radical cyclization in water for a variety of hydrophobic substrates.