Hydrogen Peroxide → HCID 11077506, compound

Participants

Reaction Steps

The vinyl sulfide of Example 1(b) (0.113 g) was irradiated for 15 min in 20 mL of methanol containing a few crystals (<1 mg) of methylene blue with continuous oxygen bubbling at -78° C. using a 1000 W Na lamp. Iodine (0.096 g) and 1 mL of 30% H2O2 were added and the mixture warmed to room temperature. Progress of the reaction was monitored by the disappearance of starting material by TLC (20% ethyl acetate in hexane) and the appearance of new bands which emitted blue light when the plate was heated and by observing the color of chemiluminescence from an aliquot of the reaction solution reacted with 0.1 M TBAF in DMSO. The yellow emission of dioxetane 1 was gradually replaced by the blue emission of dioxetane 6 over a period of several hours. The solution was concentrated to 1-2 mL and separated on preparative TLC with 10% ethyl acetate in hexane. The band containing dioxetane 6 was collected, desorbed and evaporated yielding 77 mg.

Provenance & Evidence