Ozone → HCID 178455000, compound

Participants

Reaction Steps

Ozone was passed through a -78° C. methylene chloride (100 mL) solution of compound 4b (4.73 g, 7.22 mmol) until a blue color was maintained. Excess ozone was purged with nitrogen. Dimethyl sulfide (10 mL) was added. The solution was allowed to stand for 16 h and concentrated to afford the title product which was not further purified but used directly in Step B.

Provenance & Evidence