Treatment of 1-alkynylphosphines with a rhodium catalyst in 1,4-dioxane/H2O at reflux provides (E)-1-alkenylphosphine oxides in good yields with perfect stereoselectivity. The reaction proceeds as follows. Oxidative addition of 1-alkynylphosphine to rhodium followed by hydrolysis yields the corresponding terminal alkyne and diphenylphosphine oxide. Rhodium-catalyzed hydrophosphinylation of the terminal alkyne then proceeds to afford (E)-1-alkenylphosphine oxide.
将1-炔基膦与
铑催化剂在1,4-二氧六烷/
水的回流条件下处理,可以高选择性且高产率地制得(E)-1-烯基膦氧化物。该反应过程如下:1-炔基膦的氧化加成到
铑上,随后发生
水解,生成相应的末端炔和
二苯基膦氧化物。然后,
铑催化的末端炔的氢膦化反应继续进行,生成(E)-1-烯基膦氧化物。