Butyltriphenylphosphonium periodate (Ph3P+BuIO4 −) 1 is readily prepared as a white solid from butyltriphenylphosphonium chloride, performs conversion of α-sulfinyl oximes (2) and α-sulfinyl hydrazones (4) to the corresponding β-keto sulfoxides (3) in high yields and high enantiomeric purity.
丁基三苯基
高碘酸鏻 (Ph3P+BuIO4 -) 1 很容易从丁基三苯基
氯化
鏻制备为
白色固体,在高浓度下将 α-亚磺酰基
肟 (2) 和 α-亚磺酰基腙 (4) 转化为相应的 β-酮亚砜 (3)产率和对映体纯度高。