نتایج جستجو برای: arenes

تعداد نتایج: 1476  

Journal: :Chemical Science 2023

C–H olefination of alkynes has been realized as an efficient approach to access axially chiral trisubstituted olefins, where two classes arenes have identified.

2004
Leonard J. Prins Peter Timmerman David N. Reinhoudt

This review describes the synthesis, characterization and functionalization of hydrogen bonded, box-like assemblies. These assemblies are formed upon mixing bismelamine calix[4]arenes with a complementary barbiturate in apolar solvents. Various techniques for the characterization have been used, like 'H NMR spectroscopy, X-ray crystallography and a novel MALDI-TOF MS technique. The use of cyanu...

2014
Stephen D. Ramgren Neil K. Garg

A simple method for the preparation of aryl methyl ketones is reported. The transformation involves the Pd-catalyzed coupling of an acyl anion equivalent, acetyltrimethylsilane, with aryl bromides to afford the corresponding acetylated arenes in synthetically useful yields. The methodology is tolerant of heterocycles and provides a new method for arene functionalization.

Journal: :Bulletin of the Chemical Society of Japan 1977

Journal: :Green Chemistry 2022

The selective hydrogenation of fluorinated arenes with polar functionalities to valuable cyclohexanes is achieved using supercritical CO 2 as solvent in combination Rh NPs immobilized on molecularly modified silica catalysts.

Journal: :Pure and Applied Chemistry 1970

Journal: :Journal of Physical Chemistry Letters 2021

Closed, laser-induced optical transitions (“optical cycling transitions”) of molecules can be used for state preparation and measurement in quantum information science sensing. Increasingly complex molecular species supporting provide new capabilities science, it is not clear if there a limit on their size or complexity. We explore Ca–O–L constructs to support the center, Ca, with ligands, L, b...

Journal: :Journal of the Serbian Chemical Society 2006

Journal: :The Journal of Organic Chemistry 2013

Journal: :New Journal of Chemistry 2022

[1]Rotaxanes based on monosubstituted phosphorus-containing pillar[5]arenes have been synthesized by the Kabachnik–Fields reaction for first time in good yields.

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