The virtually quantitative, room temperature hydration of various terminal and internal alkynes in methanol/water requires between 0.01–0.05 mol% of [AuCl(NHC)] activated with 1.5 equiv. of silver triflate and 45 equiv. of triflic acid (both relative to gold complex) with ton of up to 300.000. Iptycenyl‐substituted NHC ligands play the key role and the most efficient NHC ligand is characterized by a hemispherical shape formed by two N‐pentiptycenyl substituents.

中文翻译：

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双戊烯基-N-杂环碳（NHC）金配合物：炔烃室温水合的高活性催化剂

在甲醇/水中，各种末端炔烃和内部炔烃的几乎定量的室温水合反应，需要以1.5当量活化的0.01-0.05 mol％的[AuCl（NHC）]。三氟甲磺酸银和45当量。三氟甲磺酸（均相对于金络合物），最大吨数为300.000。异噻吩基取代的NHC配体起着关键作用，最有效的NHC配体的特征是由两个N-戊烯基取代基形成的半球形。