Silver-catalyzed decarboxylative acylation of arylglyoxylic acids with arylboronic acids
作者:Kai Cheng、Baoli Zhao、Chenze Qi
DOI:10.1039/c4ra04361h
日期:——
The silver-catalyzed coupling of arylboronic acids with arylglyoxylic acids was found to be an extremely efficient route for the synthesis of unsymmetrical diaryl ketones. It can be conducted on a gram scale under mild and open-flask conditions with good functional group compatibility, avoiding the addition of expensive and/or toxic metals.
denitrogenative and desulfinative addition of arylsulfonyl hydrazides with nitriles has been successfully achieved under mild conditions. This transformation is a new method for the addition reaction to nitriles with arylsulfonyl hydrazides as arylating agent, thus providing an alternative synthesis of aryl ketones. The reported addition reaction is tolerant to many common functional groups, and works
Carbonylative Hiyama coupling of aryl halides with arylsilanes under balloon pressure of CO
作者:Sheng Chang、Ying Jin、Xiu Rong Zhang、Yong Bing Sun
DOI:10.1016/j.tetlet.2016.02.058
日期:2016.5
An efficient protocol has been developed for the carbonylative Hiyama coupling of aryl halides using the cesium fluoride as a promoter by palladium-catalyzed in NMP. This protocol was applied to a wide variety of functionalized and hindered aryliodides and bromides with arylsilanes, to afford the desired biaryl ketones in good to excellent yields.
Ag(<scp>i</scp>)/persulfate-catalyzed decarboxylative coupling of α-oxocarboxylates with organotrifluoroborates in water under room temperature
作者:Sheng Chang、Jian Feng Wang、Lin Lin Dong、Dan Wang、Bo Feng、Yuan Tai Shi
DOI:10.1039/c7ra10924e
日期:——
AgNO3 using K2S2O8 as oxidant to generate diarylketone products in high yields. The method is novel, simple, safe and efficient. Both aryl substituted potassium α-oxocarboxylates and organotrifluoroborates proceeded smoothly in water under room temperature. The utilization of α-oxocarboxylates as acylatingagent presents some elements of interest.
α-氧代羧酸盐和有机三氟硼酸盐的脱羧偶联反应在催化AgNO 3的存在下使用K 2 S 2 O 8作为氧化剂顺利进行,从而以高收率生成二芳基酮产物。该方法新颖,简单,安全,高效。芳基取代的α-氧代羧酸钾和有机三氟硼酸在室温下均能顺利进行。α-氧代羧酸盐作为酰化剂的利用表现出一些令人感兴趣的元素。
Isolation, X-ray Structures, and Electronic Spectra of Reactive Intermediates in Friedel−Crafts Acylations
作者:M. G. Davlieva、S. V. Lindeman、I. S. Neretin、J. K. Kochi
DOI:10.1021/jo0501588
日期:2005.5.1
Reactive intermediates in the Friedel−Craftsacylation of aromatic donors are scrutinized upon their successful isolation and X-ray crystallography at very low temperatures. Detailed analyses of the X-ray parameters for the [1:1] complexes of different aliphatic and aromatic-acid chlorides with the Lewis acids antimony pentafluoride and pentachloride, gallium trichloride, titanium and zirconium tetrachlorides