A gold(I) complex with a 1,1′-binaphthyl-substituted diphosphene was synthesized and fully characterized. A phosphorus atom with a less-hindered binaphthyl group coordinates to a gold(I) moiety in an η¹ fashion. Both experiment and theoretical calculations supported the facile rotation around the C(Naph)–P bond in neutral and cationic diphosphene–gold(I) complexes. The newly obtained complex 2 was applied to the intramolecular hydroarylation of aryl propynyl ethers 5, and 2H-chromenes 6 were formed in 83–94% yield. Furthermore, the chiral diphosphene–gold(I) complex (S)-2 was used in the atropselective reaction to furnish 6b,c with up to 9% ee, which is the first example of the use of a diphosphene as a ligand for the transition-metal-catalyzed organic transformation.

中文翻译：

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具有1,1'-联萘基取代的二膦的金（I）配合物：合成，结构和催化应用在分子内加氢化反应中。

合成并完全表征了具有1,1'-联萘基取代的二膦的金（I）配合物。用受阻较少联萘基团的坐标到一个金（I）部分在ηA磷原子¹方式。实验和理论计算都支持在中性和阳离子二膦-金（I）络合物中围绕C（Naph）-P键的轻松旋转。将新获得的配合物2应用于芳基丙炔基醚5的分子内氢芳基化反应，并以83-94％的产率形成2 H-色烯6。此外，手性二膦-金（I）络合物（S）-2用于阻性选择反应，得到6b，c具有高达9％的ee，这是使用二膦作为过渡金属催化的有机转化的配体的第一个例子。