Iron-catalyzed carbonylation of aryl halides with arylborons using stoichiometric chloroform as the carbon monoxide source
作者:Hongyuan Zhao、Hongyan Du、Xiaorong Yuan、Tianjiao Wang、Wei Han
DOI:10.1039/c6gc02158a
日期:——
A general iron-catalyzed carbonylative Suzuki-Miyaura coupling of arylhalides with arylborons is reported, using stoichiometric CHCl3 as the COsource. The high efficiency, economy, selectivity, and operational simplicity of this...
Transition-metal-free, ambient-pressure carbonylative cross-coupling reactions of aryl halides with potassium aryltrifluoroborates
作者:Fengli Jin、Wei Han
DOI:10.1039/c5cc01968k
日期:——
We disclose an unprecedented transition-metal-free carbonylative cross coupling of arylhalides with potassium aryl trifluoroborates even at atmospheric pressure of carbon monoxide. This protocol is efficient, operationally simple, and shows...
Erbium trifluoromethanesulfonate catalyzed Friedel–Crafts acylation using aromatic carboxylic acids as acylating agents under monomode-microwave irradiation
作者:Phuong Hoang Tran、Poul Erik Hansen、Hai Truong Nguyen、Thach Ngoc Le
DOI:10.1016/j.tetlet.2014.12.038
日期:2015.1
Erbium trifluoromethanesulfonate is found to be a good catalyst for the Friedel–Craftsacylation of arenes containing electron-donating substituents using aromatic carboxylicacids as the acylating agents under microwave irradiation. An effective, rapid and waste-free method allows the preparation of a wide range of aryl ketones in good yields and in short reaction times with minimum amounts of waste
anhydrides to zerovalent palladium complexes to yield acyl(carboxylato)bis(tertiary phosphine)palladium(II) complexes and their reactions with organoboronic acids to yield ketones, a novel catalytic process has been developed. This converts carboxylic anhydrides and organoboroncompounds into ketones catalyzed by palladium complexes under mild conditions. The process provides a general, versatile, synthetic
在对羧酸酐与零价钯配合物氧化加成生成酰基(羧基)双(叔膦)钯 (II) 配合物及其与有机硼酸反应生成酮的基础研究的基础上,开发了一种新的催化工艺。这在温和条件下将羧酸酐和有机硼化合物转化为由钯配合物催化的酮。该方法提供了一种通用的、通用的合成方法来生产具有芳香族、脂肪族和杂环基团的各种对称和不对称酮。建议催化循环包括(a)羧酸酐的氧化加成以产生酰基(羧基)钯中间体,(b)与有机硼化合物进行金属转移以产生酰基(有机)钯中间体,(c) 还原消除生成酮。发现不仅均相催化剂体系而且非均相体系在温和条件下产生酮。
New Synthesis of Biaryls<i>via</i>Rh-Catalyzed Decarbonylative Suzuki-Coupling of Carboxylic Anhydrides with Arylboroxines
作者:L. J. Gooßen、J. Paetzold
DOI:10.1002/adsc.200404190
日期:2004.12
cross-coupling of aromatic carboxylicanhydrides or acid chlorides with triarylboroxines has been achieved for the first time under decarbonylation, giving rise to the unsymmetrical biaryls rather than the expected diaryl ketones. This newdecarbonylative Suzuki coupling, catalyzed by a [Rh(ethylene)2Cl]2/KF system, can be applied to aromatic, heteroaromatic and vinylic carboxylicanhydrides, potentially opening