One-Pot Preparation of α-Cyanovinyl Ethers (2-Alkoxy-2-alkenenitriles) from Vinyl Ethers: Elaboration to 3-Alkoxy-2-oxo-3-alkenenitriles and Aluminium Chloride-Catalyzed Cycloadditions to Cyclopentadiene
作者:H. M. R. Hoffmann、Kunibert Giesel、Reinhard Lies、Zeinhom M. Ismail
DOI:10.1055/s-1986-31697
日期:——
Iridium-Catalyzed Enantioselective Hydrogenation of Unsaturated Heterocyclic Acids
作者:Song Song、Shou-Fei Zhu、Liu-Yang Pu、Qi-Lin Zhou
DOI:10.1002/anie.201301341
日期:2013.6.3
binding: A highly enantioselectivehydrogenation of unsaturatedheterocyclicacids has been developed by using chiral iridium/spirophosphino oxazoline catalysts (see scheme; BArF−=tetrakis[3,5‐bis(trifluoromethyl)phenyl]borate, Boc=tert‐butoxycarbonyl). This reaction provided an efficient method for the preparation of optically active heterocyclicacids with excellent enantioselectivities.
螺旋结合:一种高度对映选择性的不饱和杂环羧酸的加氢已经通过使用手性铱/ spirophosphino恶唑啉催化剂开发(参见方案; BAR ˚F - =四[3,5-双(三氟甲基)苯基]硼酸盐,的Boc =叔丁氧羰基) 。该反应提供了制备具有优异对映选择性的旋光杂环酸的有效方法。