Intramolecular Hydroamidation of <i>ortho</i>
-Vinyl Benzamides Promoted by Potassium <i>tert</i>
-Butoxide/<i>N,N</i>
-Dimethylformamide
作者:Zhen-yu Chen、Liang-yu Wu、Hai-sheng Fang、Ting Zhang、Zhi-feng Mao、Yong Zou、Xue-jing Zhang、Ming Yan
DOI:10.1002/adsc.201700369
日期:2017.11.23
An intramolecular hydroamidation of ortho-vinyl benzamides had been developed. The reaction was promoted efficiently by potassiumtert-butoxide and N,N-dimethylformamide without the need for strong oxidants or transition-metal catalysts. A series of dihydroisoquinolinones and 3-benzylisoindolinones were prepared in good to excellent yields. The new method is operationally simple, scalable, and tolerant
Palladium-catalyzed <i>ortho</i>-halogen-induced deoxygenative approach of alkyl aryl ketones to 2-vinylbenzoic acids
作者:Shankar Ram、Ajay Kumar Sharma、Arvind Singh Chauhan、Pralay Das
DOI:10.1039/d0cc02941f
日期:——
polymer chemistry and are key precursors for the synthesis of important bioactive molecules. Herein, an ortho-halogen-induced deoxygenative approach for the generation of 2-vinylbenzoic acids from alkylarylketones by palladium catalysis is discovered and explored. This approach requires no base or stoichiometric additives and can be carried out through a simple one-step process. Furthermore, the present
Supramolecular Control of Selectivity in Hydroformylation of Vinyl Arenes: Easy Access to Valuable β-Aldehyde Intermediates
作者:Paweł Dydio、Joost N. H. Reek
DOI:10.1002/anie.201209582
日期:2013.4.2
flow! A rationally designed regioselective hydroformylation catalyst, [Rh/L], in which noncovalent ligand–substrate interactions allow the unprecedented reversal of selectivity from the typical α‐aldehyde to the otherwise unfavored product β‐aldehyde, is reported. This catalytic system opens up novel and sustainable synthetic pathways to important intermediates for the fine‐chemicals industry.
Beyond Classical Reactivity Patterns: Hydroformylation of Vinyl and Allyl Arenes to Valuable β- and γ-Aldehyde Intermediates Using Supramolecular Catalysis
作者:Paweł Dydio、Remko J. Detz、Bas de Bruin、Joost N. H. Reek
DOI:10.1021/ja503033q
日期:2014.6.11
regioselective hydroformylation of vinyl and allyl arenes bearing an anionic group. In principle, the binding site of the ligand is used to preorganize a substrate molecule through noncovalent interactions with its anionic group to promote otherwise unfavorable reaction pathways. We demonstrate that this strategy allows for unprecedented reversal of selectivity to form otherwise disfavored β-aldehyde products
Study on the ArI-catalyzed intramolecular <i>oxy</i>-cyclization of 2-alkenylbenzamides to benzoiminolactones
作者:Huixia Liu、Xiaojun Deng、Xie Huang、Nan Ji、Wei He
DOI:10.1039/d0ob00612b
日期:——
A metal-free synthetic method toward the preparation of benzoiminolactones through oxy-cyclization of 2-alkenylbenzamides mediated by a catalyst/oxidant (ArI/mCPBA) system was developed.