抽象的 在室温下,在MCM-41锚定的双齿2-氨基乙基氨基铜(II)催化剂[MCM-41-2N-在空气作为氧化剂的情况下,Cu(OAc)2 ]可以产生各种各样的[1,2,3]三唑并[1,5- a ]吡啶,并且大多数都是高产率或高产率。本方法还应用于[1,2,3]三唑[1,5- a ]的直接一锅合成。由2-酰基吡啶衍生物和肼一水合物形成的]吡啶。重要的是,这种负载的铜(II)催化剂可以通过简单的方法方便地从容易获得且廉价的试剂中获得,通过过滤反应混合物进行回收,并重复使用至少七次而不会显着降低催化活性。 在室温下,在MCM-41锚定的双齿2-氨基乙基氨基铜(II)催化剂[MCM-41-2N-在空气作为氧化剂的情况下,Cu(OAc)2 ]可以产生各种各样的[1,2,3]三唑并[1,5- a ]吡啶,并且大多数都是高产率或高产率。本方法还应用于[1,2,3]三唑[1,5- a ]的直接一锅合成。
Room Temperature Metal-Catalyzed Oxidative Acylation of Electron-Deficient Heteroarenes with Alkynes, Its Mechanism, and Application Studies
作者:Shweta Sharma、Mukesh Kumar、Ram A. Vishwakarma、Mahendra K. Verma、Parvinder Pal Singh
DOI:10.1021/acs.joc.8b01475
日期:2018.10.19
room-temperature, regioselective Minisci reaction for the acylation of electron-deficient heteroarenes with alkynes. The method has broad functional group compatibility and gives exclusively monoacylated products in good to excellent yields. The mechanistic pathway was analyzed based on a series of experiments confirming the involvement of a radical pathway. The 18O-labeling experiment suggested that water
Ruthenium-catalyzed <i>meta</i>-C–H bond alkylation of aryl 2-pyridyl ketones
作者:Gang Li、Chunqi Jia、Xiaofeng Cai、Lei Zhong、Lei Zou、Xiuling Cui
DOI:10.1039/c9cc08624b
日期:——
The first example of meta-selective CAr-H bond functionalization of aryl 2-pyridyl ketones has been developed using [Ru(p-cymene)Cl2]2 as the catalyst and alkyl bromide as the coupling reagent. This development provides an efficient strategy for modifying the meta-position of aryl 2-pyridyl ketone skeletons, which are found in various functional molecules.
A highlyefficient photoinduced iron-catalyzed method has been developed for the direct use of alcohols as surrogates for organometallic reagents in the synthesis of tertiaryalcohols. This method can be applied to both primary and secondaryalcohols with diverse structures, enabling their reaction with aryl ketones under mild conditions. A variety of functional groups, including those that are typically