Δ5-7-Oxosteroids are efficiently prepared from Δ5-steroids with t-BuOOH and a copper catalyst, either Cu(II) and Cu (I) salts or Cu metal; selectivity in the presence of a secondary alcohol is observed.
Δ 5 -7- Oxosteroids有效地从制备Δ 5个-steroids与吨-BuOOH和
铜催化剂,无论是
铜(II)和Cu(I)盐或
铜金属; 在仲醇存在下观察到选择性。