Oxygen → HCID 9912872, compound

Participants

Reaction Steps

Adding 1 mg of TPP to 2 ml of methylene chloride dissolving 47 mg (0.066 mmol) of 4-t-butyl-5-(5-(t-butyldimethylsiloxy)-3-ethoxybenzofuran-2-yl)-3,3-dimethyl-2,3-dihydrofuran (Compound [36]), the mixture was stirred in oxygen atmosphere, at the temperature of −78° C. This solution was externally irritated with a 940 W sodium lamp for 4 hours. The reaction mixture was concentrated to obtain 5-t-butyl-1-(5-(t-butyldimethylsiloxy)-3-ethoxybenzofuran-2-yl)-4,4-dimethyl-2,6,7-trioxabicyclo[3.2.0]heptane (Compound [37]) as a crude product.

Provenance & Evidence