نتایج جستجو برای: pot synthesis

تعداد نتایج: 417578  

Journal: :Organic & biomolecular chemistry 2012
Ke Chen Sumod A Pullarkat

A palladacycle-catalyzed tandem Heck-intramolecular aza-Michael reaction protocol has been developed for the one-pot synthesis of 1-substituted isoindolines from N-unprotected 2-bromobenzylamines and acrylates with high yields.

Journal: :Chemical communications 2007
Naoki Hayashi Kazunao Kusano Shingo Sekizawa Ikuya Shibata Makoto Yasuda Akio Baba

Regio- and stereoselective hydrostannation of allenes by using di-n-butyliodotin hydride (Bu2SnIH) was accomplished to give alpha,beta-disubstituted vinyltins, which induced the synthesis of multi-substituted alkenes in a one-pot procedure.

Journal: :Chemical communications 2012
Mark W Grafton Louis J Farrugia Hans Martin Senn Andrew Sutherland

A one-pot tandem process involving an Overman rearrangement, ring closing enyne metathesis and a hydrogen bonding directed Diels-Alder reaction has been developed for the efficient diastereoselective synthesis of functionalised amino substituted tetralin and indene ring systems.

Journal: :Chemical communications 2011
Thomas Pesnot Markus C Gershater John M Ward Helen C Hailes

A one-pot synthesis of tetrahydroisoquinoline alkaloids in a phosphate buffer has been achieved, and a reaction mechanism proposed. The utilisation of mild reaction conditions readily afforded a range of isoquinolines, including norcoclaurine.

2015
C. Chun Chen Jerome Waser

A one-pot three-component protocol for the preparation of arylsulfonyl alkynes through the reaction of ethynyl-benziodoxolone (EBX) reagents, DABSO (DABCO·SO2), and either organomagnesium reagents or aryl iodides with a palladium catalyst is reported. A broad range of aryl and heteroarylalkynyl sulfones were obtained in 46-85% overall yield.

Journal: :Nucleic acids research 1990
M L Capobianco A Carcuro L Tondelli A Garbesi G M Bonora

Several cyclic oligodeoxynucleotides with different base composition and size have been prepared from 5',3'-unprotected linear precursors, using a bifunctional phosphorylating reagent. The final deprotected oligomers have been characterized by 1H- and 31P-NMR. The present procedure is particularly useful for millimolar scale syntheses.

Journal: :Chemical communications 2013
Bagineni Prasad B Yogi Sreenivas G Rama Krishna Ravikumar Kapavarapu Manojit Pal

Unprecedented synthesis of functionalized indoles of potential pharmacological interest has been developed via a Pd-mediated cascade reaction involving an intramolecular Heck coupling followed by the construction of a fused cyclopentane ring in a single pot.

Journal: :Organic & biomolecular chemistry 2009
Ahmed M Zaed Michael D Swift Andrew Sutherland

A stereoselective synthesis of (+)-physoperuvine, a tropane alkaloid from Physalis peruviana Linne has been developed using a one-pot tandem aza-Claisen rearrangement and ring closing metathesis reaction to form the key amino-substituted cycloheptene ring.

Journal: :Chemical communications 2007
Martin Valík Jan Cejka Martin Havlík Vladimír Král Bohumil Dolenský

The first members of a new cavitand family, represented by calix-shaped tris Tröger's base diastereoisomers, are prepared via step-by-step synthesis as well as one-pot mixed troegeration.

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