نتایج جستجو برای: pot reaction

تعداد نتایج: 423614  

Journal: :Chemical communications 2012
Guanyinsheng Qiu Yaohua He Jie Wu

A palladium-catalyzed three-component reaction of bis-(2-iodoaryl)carbodiimide, isocyanide, and amine gives rise to quinazolino[3,2-a]quinazolines and related compounds in good yields. Multi-bonds are formed in one pot through nucleophilic attack, isocyanide insertion, and C-N coupling during the reaction process.

2015
Kuhelika Das

α-Aminophosphonates (4a-h) were synthesized in one-pot simultaneous reaction of aniline(1), dimethylphosphite(3), and different aromatic aldehydes (2) by Kabachnik–Fields reaction in ethanol at room temperature. The products (4a-h) were obtained in good yields. All these compounds were found to exhibit moderate to good antimicrobial activity.

2014
David M. Barber Andrej Ďuriš Amber L. Thompson Hitesh J. Sanganee Darren J. Dixon

The highly enantioselective preparation of trisubstituted pyrrolidine derivatives employing a one-pot nitro-Mannich/hydroamination cascade is reported. This cascade approach utilizes an asymmetric bifunctional organocatalytic nitro-Mannich reaction followed by a gold-catalyzed allene hydroamination reaction. The products are afforded in good yields and excellent diastereo- and enantioselectivit...

Journal: :Chemical communications 2013
John D Nguyen Barbara Reiss Chunhui Dai Corey R J Stephenson

Herein we report a one-pot deoxygenation protocol for primary and secondary alcohols developed via the combination of the Garegg-Samuelsson reaction, visible light-photoredox catalysis, and flow chemistry. This procedure is characterized by mild reaction conditions, easy-to-handle reactants and reagents, excellent functional group tolerance, and good yields.

Journal: :Chemical communications 2013
Andrej Ďuriš David M Barber Hitesh J Sanganee Darren J Dixon

An efficient one-pot nitro-Mannich/hydroamination cascade reaction for the synthesis of substituted pyrrolidines bearing three stereocentres is reported. Proceeding under the control of a combination of base and gold(I) catalysts, the cascade reaction affords the pyrrolidine products in high yields with good to excellent diastereoselectivities.

Journal: :Organic letters 2011
Joana Gordo João Avó A Jorge Parola João C Lima António Pereira Paula S Branco

A variety of 2-hydroxy aldehydes on reaction with 3-butenoic acid afford in a one-pot reaction the corresponding 3-vinylcoumarins. As expected, extension of the delocalized π-electron system accomplished by Heck coupling reactions with aryl halides results in an increased fluorescence of the compounds whose applicability is yet to be established.

Journal: :Molecules 2005
Elisaveta V D'yachenko Tatiana V Glukhareva Lyudmila V Dyudya Oleg V Eltsov Yury Yu Morzherin

The tert-amino reaction effect was examined. A new method to synthesize spiro heterocycles is presented. It was shown that the "tert-amino effect" could be applied to the formation of spiro-fused heterocycles. The formation of spiro compounds proceeds in most cases in good yields in a one-pot reaction.

Journal: :Organic letters 2006
Thomas Georgiou Maria Tofi Tamsyn Montagnon Georgios Vassilikogiannakis

[reaction: see text] A versatile and general method for the biomimetic construction of [5,5,5]- and [6,5,6]-bis-spiroketals, starting from easily accessible furan nuclei, by means of a powerful one-pot singlet oxygen-mediated cascade sequence is reported.

Journal: :Chemical communications 2012
James A Bull Tom Boultwood Thomas A Taylor

The first preparation of iodoaziridines is described. The addition of diiodomethyllithium to N-Boc-imines affords these novel aziridines in high yields. The reaction proceeds in one-pot via a highly diastereoselective cyclisation of an amino gem-diiodide intermediate.

Journal: :Chemical communications 2008
Sean P Bew Myles R Cheesman Sunil V Sharma

Ferrocenium salts mediate high yielding one-pot and convergent syntheses of para-tert-butylcalixarenes in mild non-Lewis or Brønsted acidic reaction conditions; EPR indicates complex formation between the s-trioxane and the ferrocenium salt.

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