Information om | Engelska ordet AZIDES

Exempel på hur man kan använda AZIDES i en mening

• When used as a ligand, complexed to copper(I), it allows for quantitative, regioselective formal Huisgen 1,3-dipolar cycloadditions between alkynes and azides, in a variety of aqueous and organic solvents.
• However, triazoles are also useful in bioorthogonal chemistry, because the large number of nitrogen atoms causes triazoles to react similar to azides.
• Another example of RSP can be found in the selectivity of the reaction of certain carbocations with azides and water.
• For instance, they are formed upon treatment of chloramine derivatives with silver salts or by activation of aryl hydroxylamine derivatives or aryl azides with Brønsted or Lewis acids.
• He first presented the cycloaddition of acetylenes and azides used in peptide and protein conjugations, in polymers and in material sciences.
• The Staudinger synthesis should not be confused with the Staudinger reaction, a phosphine or phosphite reaction used to reduce azides to amines.
• Other functional groups that have been reduced with hydrosilanes include amides, and α,β-unsaturated esters enamines, imines, and azides.
• In some applications, tributyltin azide has been replaced by the less toxic trioctyltin azide and organoaluminium azides.
• The Staudinger ligation is a reaction developed by the Bertozzi group in 2000 that is based on the classic Staudinger reaction of azides with triarylphosphines.
• ONDs react with organic azides to yield a mixture of four products, arising from initial 1,3-dipolar cycloaddition onto either of the two olefins, followed by a retro-Diels–Alder reaction (a cycloelimination reaction) to form 1,2,3-triazoles and furans.
• Acyl azides have also been synthesized from various carboxylic acids and sodium azide in presence of triphenylphosphine and trichloroacetonitrile catalysts in excellent yields at mild conditions.
• Bioorthogonal agents contain functional groups such as azides or cyclooctynes for coupling which are not naturally found in the cell.
• Glycosylated N-sulfonylamidines: Highly efficient copper catalyzed multicomponent reaction with sugar alkynes, sulfonyl azides and amines: Santanu Mandal, Harsh Mohan Gauniyal, Kausikisankar Pramanik, Balaram Mukhopadhyay, Journal of Organic Chemistry 2007, 72, 9753–9756.
• Further radical modes of reactivity include radical substitutions on weak C-H bonds to form α‐azido ethers, benzal acetals, and aldehydes, and the conversion of aldehydes to acyl azides.
• Neutral binary azides are rather difficult to study due to the fluxional nature of the azido ligands and their lack of thermal and shock stability.
• Isaacs works on copper-catalyzed reactions using click chemistry, particularly , the copper-catalyzed cycloaddition of sulfonyl azides and terminal alkynes (CuAAC) and differential fragmentation of the resulting 1,2,3-triazole generates ketenimines and rhodium carbenoids which readily engage with a variety of nucleophiles to gain access to heterocycles of interest to the synthetic community.

Förberedelsen av sidan tog: 368,05 ms.