نتایج جستجو برای: benzyl halides

تعداد نتایج: 11863  

D.N. Prasad Neeru Malik,

      A series of N-substituted-2,4-thiazolidinedione derivatives (TZDs) were prepared via N-alkylation of 2,4-TZD at position 3 using substituted benzyl halides. Synthesized N-substituted-2,4-TZD was then substituted at position 5 with substituted aromatic aldehyde according to Knoevenagel condensation method. Structures of the compounds were elucidated using various spectral techniques viz. I...

Journal: :Organic letters 2009
Qing Xiao Jian Ma Yang Yang Yan Zhang Jianbo Wang

Pd-catalyzed reaction of N-tosylhydrazones with benzyl halides affords di- and trisubstituted olefins in high yields with excellent stereoselectivity. This coupling reaction is supposed to proceed through a migratory insertion of Pd carbene species.

Journal: :Chemical communications 2009
Robin B Bedford Michael Huwe Mark C Wilkinson

Iron-based catalysts containing either 1,2-bis(diphenylphosphino)benzene or 1,3-bis(diphenylphosphino)propane give excellent activity and good selectivity in the Negishi coupling of aryl zinc reagents with a range of benzyl halides and phosphates.

Journal: :Organic & biomolecular chemistry 2009
Cécile Verrier Christophe Hoarau Francis Marsais

The ethyl oxazole-4-carboxylate was directly and regioselectively alkenylated, benzylated and alkylated with alkenyl-, benzyl-, allyl- and alkyl halides in the presence of catalytic amounts of palladium acetate with caesium carbonate using Buchwald's JohnPhos ligand.

Journal: :Organic & biomolecular chemistry 2015
Aiichiro Nagaki Yuta Tsuchihashi Suguru Haraki Jun-ichi Yoshida

Reductive lithiation of benzyl halides bearing aldehyde carbonyl groups followed by reaction with subsequently added electrophiles was successfully accomplished without affecting the carbonyl groups by taking advantage of short residence times in flow microreactors.

Journal: :Journal of Synthetic Organic Chemistry, Japan 1972

Journal: :The Journal of organic chemistry 2007
Keith J Stanger Jung-Jae Lee Bradley D Smith

Compared to structurally related linear trialkylamines, a simple macrocyclic amine with an anion-binding cavity exhibits very large rate enhancements (>10(5)) for stoichiometric N-alkylation with primary alkyl, allyl, and benzyl halides in the weakly polar solvent CDCl3. There is also a major distortion of the halide leaving-group order. For example, with benzyl halides the relative leaving-gro...

Journal: :Molbank 2021

The X-ray structure of the title compound has been determined for first time. Its molecular is in good agreement with those previously similar benzyl halides and angles between ring–Cl bonds adjacent molecules show values an early Zeeman quadrupole spectroscopy study.

2013
Joanna V. Geden Benjamin O. Beasley Guy J. Clarkson Michael Shipman

2-Substituted azetidin-3-ones can be prepared in good yields and enantioselectivities (up to 85% ee) by a one-pot procedure involving the metalation of the SAMP/RAMP hydrazones of N-Boc-azetidin-3-one, reaction with a wide range of electrophiles, including alkyl, allyl, and benzyl halides and carbonyl compounds, followed by hydrolysis using oxalic acid.

Journal: :Chemical communications 2012
John Mondal Arindam Modak Arghya Dutta Sohini Basu Shambhu Nath Jha Dibyendu Bhattacharyya Asim Bhaumik

Surface functionalization of SBA-15 followed by its reaction with Cu(OAc)(2) has been carried out to develop a new Cu-grafted functionalized mesoporous material, which catalyzes one-pot three component coupling of different aryl halides with thiourea and benzyl bromide in aqueous medium to produce aryl thioethers in very good yields (80-88%).

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