Gold(<scp>i</scp>)-catalyzed cross-coupling reactions of aryldiazonium salts with organostannanes
作者:Manjur O. Akram、Popat S. Shinde、Chetan C. Chintawar、Nitin T. Patil
DOI:10.1039/c8ob00630j
日期:——
Gold(I)-catalyzed cross-couplingreactions of aryldiazonium salts with organostannanes are described. This redox neutral strategy offers an efficient approach to diverse biaryls, vinyl arenes and arylacetylenes. Monitoring the reaction with NMR and ESI-MS provided strong evidence for the in situ formation of Ph3PAuIR (R = aryl, vinyl and alkynyl) species which is crucial for the activation of aryldiazonium
描述了金(I)催化的芳基重氮盐与有机锡烷的交叉偶联反应。这种氧化还原中性策略为各种联芳基,乙烯基芳烃和芳基乙炔提供了一种有效的方法。用NMR和ESI-MS监测反应为原位形成Ph 3 PAu I R(R =芳基,乙烯基和炔基)物种提供了有力证据,这对于激活芳基重氮盐至关重要。
Tin for Organic Synthesis, 14. Synthesis of Aromatic and α,β‐Unsaturated Aldehydes by a Friedel‐Crafts‐like Electrophilic Destannylation Using 1,1‐Dichloromethyl Methyl Ether
作者:Michael Niestroj、Wilhelm P. Neumann†
DOI:10.1002/cber.19961290111
日期:1996.1
for the preparation of a variety of aromatic (7a–m), heteroaromatic (7n–r), and α,β-unsaturated aldehydes (8a–f) is described. The reaction of trialkylaryl- (2a–o), heteroaryl- (2p–t), and 1-alkenylstannanes (4a–f and 5a–f) with dichloromethylmethylether (1, DCME) in the presence of aluminium trichloride followed by hydrolysis provides the corresponding aldehydes. In the case of arylstannanes the ipso-isomers
A novel Pd-catalyzed desulfitative cross-coupling reaction of sodium arylsulfinates with hexaalkyl distannanes is realized, allowing the facile synthesis of functionalized arylstannanes with moderate to excellent yields. The successful implement of gram-scale synthesis and tandem Stille coupling reaction demonstrates the potential applications of this method in organic synthesis.
aryl group from boron to tin can be achieved by simple treatment of arylboronic acids with tributyltin methoxide at 100 °C for 1 h under neat conditions. The resulting aryltributylstannanes are applicable to one-pot synthesis of diaryl ketones. Thus, Pd-catalyzed cross-coupling reaction with aroyl chlorides is allowed to proceed without isolation step to produce the corresponding diaryl ketones in
Catalytic Ester to Stannane Functional Group Interconversion via Decarbonylative Cross-Coupling of Methyl Esters
作者:Huifeng Yue、Chen Zhu、Magnus Rueping
DOI:10.1021/acs.orglett.7b03669
日期:2018.1.19
An unprecedented conversion of methyl esters to stannanes was realized, providing access to a series of arylstannanes via nickel catalysis. Various common esters including ethyl, cyclohexyl, benzyl, and phenyl esters can undergo the newly developed decarbonylative stannylation reaction. The reaction shows broad substrate scope, can differentiate between different types of esters, and if applied in