Results 51 to 60 of about 909,766 (269)

Solid phase strain promoted “click” modification of DNA via [3+2]-nitrile oxide–cyclooctyne cycloadditions [PDF]

open access: yes, 2011
Biocompatible, strain promoted cyclooctyne–nitrile oxide click chemistry is demonstrated as a rapid and reliable method for DNA conjugation on the solid ...
Ishwar Singh   +3 more
core   +3 more sources

A Molecular Electron Density Theory Study of the Chemoselectivity, Regioselectivity, and Diastereofacial Selectivity in the Synthesis of an Anticancer Spiroisoxazoline derived from α-Santonin

open access: yesMolecules, 2019
The [3 + 2] cycloaddition (32CA) reaction of an α-santonin derivative, which has an exocyclic C⁻C double bond, with p-bromophenyl nitrile oxide yielding only one spiroisoxazoline, has been studied within the molecular electron density theory ...
Luis R. Domingo   +2 more
doaj   +1 more source

Hydroxyl-directed nitrile oxide cycloaddition reactions with cyclic allylic alcohols.

open access: yes, 2007
Diastereoselective cycloaddition reactions between a nitrile oxide and cyclic allylic alcohols are reported. The products isolated are densely functionalized building blocks that are not otherwise easily accessed with existing methods and concepts ...
Becker N, Carreira EM
core   +1 more source

Optical Detection of Cellular Signals at Material Interfaces

open access: yesAdvanced Healthcare Materials, EarlyView.
Emerging functional materials are transforming optical detection of cellular signals. This review highlights optical techniques that exploit the unique optical properties of diverse materials to detect and quantify cellular electrical, chemical, and mechanical signals, and discusses key opportunities and challenges.
Xuchen Ren   +5 more
wiley   +1 more source

Effect of different charge number metal ions on mechanical properties of carboxylated nitrile rubber composites

open access: yesHecheng xiangjiao gongye
Three types of metal oxide, magnesium oxide(MgO), zinc oxide(ZnO) and aluminium oxide(Al2O3), were added into carboxylated nitrile rubber (XNBR) to prepared XNBR/metal oxide composites, the properties of which, such as interactions between metal ions and
LUO Jiang1, XIE Qing-jun1, YANG Shu-yan2
doaj   +1 more source

STEREOSELECTIVE INTRAMOLECULAR NITRILE OXIDE CYCLOADDITION TO CHIRAL ALLYL ETHERS

open access: yes, 1987
Intramolecular nitrile oxide cycloaddition reactions on (Z)- and (E)-chiral allyl ethers occur with poor to good stereoselectivity (diastereoisomeric ratios up to 86: 14), which depends on the double bond configuration as well as on steric and ...
M. CINQUINI   +3 more
core   +1 more source

Bioinspired Adaptive Sensors: A Review on Current Developments in Theory and Application

open access: yesAdvanced Materials, EarlyView.
This review comprehensively summarizes the recent progress in the design and fabrication of sensory‐adaptation‐inspired devices and highlights their valuable applications in electronic skin, wearable electronics, and machine vision. The existing challenges and future directions are addressed in aspects such as device performance optimization ...
Guodong Gong   +12 more
wiley   +1 more source

Ethyl 5-(4-Bromophenyl)-4-methyl-1H-pyrrole-2-carboxylate

open access: yesMolbank, 2017
This note describes a sequence converting an oxime-substituted pyrrolidine into a trisubstituted pyrrole structure. The synthetic route is based on a double chlorination of the pyrrolidine substrate followed by the base induced formation of both an imine
Marcus Baumann, Ian R. Baxendale
doaj   +1 more source

lntramolecular Nitrile Oxide Cycloaddition (INOC)of Substituted Amido-Oximes

open access: yes, 1996
Functionalized enantiomerically pure 3,4-dehydropyrrolidin-2-one and 1,2-dehydropyrrolizidin-3-one systems have been achieved by intramolecular nitrile oxide cycloaddition, starting from enamido-oximes, and by subsequent reduction of the obtained ...
Librando V.   +5 more
core   +1 more source

Inverse electron-demand 1,3-dipolar cycloaddition of nitrile oxide with common nitriles leading to 3-functionalized 1,2,4-oxadiazoles [PDF]

open access: yes, 2011
A carbamoyl-substituted nitrile oxide was generated upon treatment of easily available 2-methyl-4-nitro-3-isoxazolin-5(2H)-one with THF (not dried); the reaction proceeded efficiently even in the absence of any special reagents and reaction conditions ...
Shotaro Hirao   +15 more
core   +1 more source

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