The RuH2(CO)(PPh3)3-catalyzed C–H functionalization of aromatic esters with 5,5-dimethyl-2-aryl-[1,3,2]dioxaborinanes (arylboronates) gave the orthoarylation products. This coupling reaction can be performed with various combinations of isopropyl benzoate derivatives and arylboronates. Introduction of CF3 group in the aromatic ring increased the reactivity of the esters. Pinacolone effectively served
RuH 2(CO)(PPh 3)3催化的芳香族酯与5,5-二甲基-2-芳基-[1,3,2]二氧杂硼烷酮(芳基硼酸酯)的C–H官能化反应得到邻芳基化产物。该偶联反应可以用异丙基苯甲酸酯衍生物和芳基硼酸酯的各种组合进行。在芳环中引入CF 3基团增加了酯的反应性。Pinacolone有效地充当了由C–H键断裂产生的氢化物的接受体,并且使用的pinacolone的量也影响了芳基化产物的收率。
Direct synthesis of 1,1-diarylalkenes from alkenyl phosphates via nickel(0)-catalysed Suzuki–Miyaura coupling
作者:Anders L. Hansen、Jean-Philippe Ebran、Thomas M. Gøgsig、Troels Skrydstrup
DOI:10.1039/b609064h
日期:——
A combination of Ni(COD)(2) and PCy(3) promotes effectively the Suzuki-Miyaura cross coupling of 1-arylalkenyl phosphates with aryl boronic acids with yields attaining 99%.
Borylation of organo halides and triflates using tetrakis(dimethylamino)diboron
作者:Charles S. Bello、Joachim Schmidt-Leithoff
DOI:10.1016/j.tetlet.2012.09.009
日期:2012.11
We report a new in situ borylation method using tetrakis(dimethylamino)diboron, DMA4B2, in the presence of a diol. Our method uses standard borylation conditions and readily available Pd-catalysts. The scope of this method includes aryl halides and triflates as well as vinyl halides and triflates. The method successfully works with a broad range of diols, enabling the selection of the best boronic
我们报告了一种新的原位硼化方法,使用四(二甲基氨基)二硼,DMA 4 B 2,在二醇的存在下。我们的方法使用标准的硼化条件和现成的Pd催化剂。该方法的范围包括芳基卤化物和三氟甲磺酸酯以及乙烯基卤化物和三氟甲磺酸酯。该方法成功地与多种二醇一起使用,从而能够为随后的Suzuki偶联选择最佳的硼酸酯。
Copper-Catalyzed Cross-Coupling Reaction of Organoboron Compounds with Primary Alkyl Halides and Pseudohalides
作者:Chu-Ting Yang、Zhen-Qi Zhang、Yu-Chen Liu、Lei Liu
DOI:10.1002/anie.201008007
日期:2011.4.18
Non‐activated alkylelectrophiles, including alkyl iodides, bromides, tosylates, mesylates, and even chlorides, underwent copper‐catalyzedcross‐coupling with aryl boron compounds and alkyl 9‐BBN reagents (see scheme; 9‐BBN=9‐borabicyclo[3.3.1]nonane). The reactions proceed with practically useful reactivities and thus complement palladium‐ and nickel‐catalyzed Suzuki–Miyaura coupling reactions of alkyl halides
Ruthenium-Catalyzed α-(Hetero)Arylation of Saturated Cyclic Amines: Reaction Scope and Mechanism
作者:Aldo Peschiulli、Veerle Smout、Thomas E. Storr、Emily A. Mitchell、Zdeněk Eliáš、Wouter Herrebout、Didier Berthelot、Lieven Meerpoel、Bert U. W. Maes
DOI:10.1002/chem.201204438
日期:2013.7.29
3‐ethyl‐3‐pentanol. A systematic study on the substrate and reagent scope of this transformation is disclosed in this paper. The effect of substitution on both the piperidine ring and the arylboronic ester has been investigated. Smaller (pyrrolidine) and larger (azepane) saturated ring systems, as well as benzoannulated derivatives, were found to be compatible substrates with the α‐arylation protocol. The successful