Tertiary Amine-Triggered Cascade S<sub>N</sub>2/Cycloaddition: An Efficient Construction of Complex Azaheterocycles under Mild Conditions
作者:Jian Hu、Bing Tian、Xinyan Wu、Xiaofeng Tong
DOI:10.1021/ol302329b
日期:2012.10.5
In this paper, an amine-triggeredcascade SN2/cycloaddtion sequence between 2-(acetoxymethyl)buta-2,3-dienoate 1 and various π-system functionalized tosylamides 3 has been reported, which provides a facile method for stereoselective construction of structurally diverse azaheterocycles.
在本文中,已经报道了在2-(乙酰氧基甲基)丁2,3-二烯酸酯1和各种π-系统官能化的甲苯磺酰胺3之间的胺触发级联S N 2 /环加成序列,为立体选择性构建Sn 2提供了一种简便的方法。结构上不同的氮杂杂环。
Silver- and Gold-Catalyzed Intramolecular Rearrangement of Propargylic Alcohols Tethered with Methylenecyclopropanes: Stereoselective Synthesis of Allenylcyclobutanols and 1-Vinyl-3-oxabicyclo[3.2.1]octan-8-one Derivatives
作者:Liang-Feng Yao、Yin Wei、Min Shi
DOI:10.1021/jo902261r
日期:2009.12.18
polysubstituted allenylcyclobutanols and the obtained allenylcyclobutanols catalyzed by Au(I) furnish a wide range of bridged bicyclic compounds with a vinyl-substituted quaternary stereogenic center stereoselectively.
Palladium(ii)-catalyzed ring enlargement of 2-(arylmethylene)cyclopropylcarbinols: strong effect of substituent electronic nature on the reaction pathway
作者:Guo-Qiang Tian、Zhi-Liang Yuan、Zhi-Bin Zhu、Min Shi
DOI:10.1039/b804932g
日期:——
In the presence of Pd(II) catalyst and copper(II) bromide, 2-(arylmethylene)cyclopropylcarbinols undergo ring enlargement to deliver (arylcyclobutenyl)carbinols or hydrogenated furans in good yields under mild conditions; mechanisms accounting for the distinct products have been proposed on the basis of control and deuterium labeling experiments.