The unique amphiphilic Zwitterionic P,O-hybrid ligand (L1) containing phosphino-fragment and −SO₃⁻ group was synthesized and firstly applied in Au-catalyzed hydration of alkynes. Without the aid of any auxiliary additive such as acid or silver salt, L1-based Au-catalyst exhibited excellent activity towards hydration of alkynes to yield ketones with 100% selectivity according to Markovnikov’s rule. On the other hand, L1-based Au-catalyst could be recycled for 4 runs in room temperature ionic liquid of [Bmim]PF₆ without obvious activity loss, and also exhibited wide generality to the hydration of different alkynes.

中文翻译：

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基于两性两性离子膦的Au（I）络合物，是高效且可回收的炔烃水合催化剂，不含其他添加剂

独特的两亲两性离子P，O-混合配位体（L1）含膦基片段和-SO ₃ ^-基团的合成和炔烃的Au催化水合首先施加。在不借助任何辅助添加剂（例如酸或银盐）的情况下，根据Markovnikov规则，基于L1的Au催化剂表现出出色的炔烃水合活性，以100％的选择性生成酮。另一方面，基于L1的Au催化剂可以在[Bmim] PF _6的室温离子液体中循环使用4次，而没有明显的活性损失，并且对不同炔烃的水合表现出广泛的通用性。