Ni-Catalyzed Stereoselective Arylation of Inert C–O bonds at Low Temperatures
摘要:
A Ni-catalyzed arylation of inert C-O bonds that operates at temperatures as low as -40 degrees C is described. Unlike other methods for C-O bond cleavage utilizing organometallic species, this protocol operates at low temperatures, thus allowing the presence of sensitive functional groups with exquisite site-selectivity and stereoselectivity.
Lewis Acid Catalyzed Intramolecular [4+2] Cycloaddition of In Situ Generated Aza‐Quinone Methides for the Stereoselective Synthesis of Furo/pyrano[3,2‐
<i>c</i>
]tetrahydroquinolines
作者:Santosh J. Gharpure、Dharmendra S. Vishwakarma
DOI:10.1002/ejoc.201901598
日期:2020.11.30
A TMSOTf‐catalyzed intramolecular [4+2] cycloaddition of in situ generated aza‐o‐quinone methide acts as an expedient, stereoselective access to cis/trans‐fused furo‐/pyrano[3,2‐c]tetrahydroquinolines with excellent yields and diastereoselectivity.
TMSOTf催化的原位生成的氮杂-邻-醌甲基化物的分子内[4 + 2]环加成反应,是对顺式/反式融合的呋喃-/吡喃并[3,2- c ]四氢喹啉的便捷,立体选择途径,并具有优异的收率和非对映选择性。
Palladium-Catalyzed Intramolecular Fluorooxylation of Styrenes
作者:Zheliang Yuan、Haihui Peng、Guosheng Liu
DOI:10.1002/cjoc.201300437
日期:2013.7
A novel palladium‐catalyzed intramolecularfluorooxylation of styrenes has been developed by using NFSI as fluorinating reagent. This reaction provides an efficient way for the synthesis of 2‐aryl‐3‐fluorotetrahydrofuran derivatives.