Efficient and scalable synthesis of ketones via nucleophilic Grignard addition to nitriles using continuous flow chemistry
作者:Carlos Mateos、Juan A. Rincón、José Villanueva
DOI:10.1016/j.tetlet.2013.02.069
日期:2013.5
In the present Letter we report the development of efficient continuous flow chemistry conditions for the scalable preparation of ketones. This transformation is achieved via nucleophilic addition of Grignard reagents to the corresponding nitriles and imine hydrolysis by means of in-series plug flow reactors.
Introducing Glycerol as a Sustainable Solvent to Organolithium Chemistry: Ultrafast Chemoselective Addition of Aryllithium Reagents to Nitriles under Air and at Ambient Temperature
作者:María J. Rodríguez-Álvarez、Joaquín García-Álvarez、Marina Uzelac、Michael Fairley、Charles T. O'Hara、Eva Hevia
DOI:10.1002/chem.201705577
日期:2018.2.1
and ultrafast addition of a range of aryllithium reagents to nitriles has been accomplished by using glycerol as a solvent, at ambient temperature in the presence of air, establishing a novel sustainable access to aromatic ketones. Addition reactions occur heterogeneously (“on glycerol conditions”), where the lack of solubility of the nitriles in glycerol and the ability of the latter to form strong intermolecular
Copper-Catalyzed Oxidative Alkynylation of Diaryl Imines with Terminal Alkynes: A Facile Synthesis of Ynimines
作者:Anouar Laouiti、Mohamed M. Rammah、Mohamed B. Rammah、Jérome Marrot、François Couty、Gwilherm Evano
DOI:10.1021/ol2032152
日期:2012.1.6
An efficient copper-mediated method for the oxidative alkynylation of diaryl imines with terminalalkynes is reported. This reaction provides the first catalytic and general synthesis of ynimines and allows for an easy preparation of these useful building blocks. An improved copper-catalyzedoxidative dimerization of imines to azines and the synthesis of dienes and azadienes from ynimines are also
Enantioselective Hydrogenation of Diarylmethanimines for Synthesis of Chiral Diarylmethylamines
作者:Duanyang Kong、Meina Li、Guofu Zi、Guohua Hou、Yong He
DOI:10.1021/acs.joc.6b01273
日期:2016.8.5
An enantioselectivehydrogenation of N-substituted diarylmethanimines under mild conditions has been first realized by using an iridiumcatalyst with a chiral f-spiroPhos ligand. This method provides an efficientaccess to the asymmetric synthesis of a variety of chiral diarylmethylamines and their derivatives with excellent enantioselectivities (up to 99.4% ee) and high turnover numbers (TON up to