نتایج جستجو برای: aza cope rearrangement

تعداد نتایج: 64605  

Journal: :Organic chemistry frontiers 2023

N -Fluoroalkylated 1,2,3-triazoles underwent a microwave-heating-assisted ring opening, nitrogen molecule elimination and concomitant group rearrangement to form isolable -fluoroalkylketenimines.

Journal: :Organic & biomolecular chemistry 2013
Jonathan D Osler William P Unsworth Richard J K Taylor

The reactivity of a range of substituted divinylcyclopropanes towards the thermal Cope rearrangement has been examined. The effects of gem-dimethyl substitution on the cyclopropane, the alkene geometry, the relative stereochemistry of the cyclopropane and the steric and electronic effects of a range of functional groups were all examined, and the methods developed were used to synthesise a rang...

Journal: :Angewandte Chemie 2011
Leoni I Palmer Javier Read de Alaniz

number of elegant approaches to construct azaspirocycles have been developed. The methods differ in the strategy used to address the two main synthetic challenges: construction of the tertiary carbon center bearing the nitrogen atom, and the formation of the spirocyclic ring system. Generally, the synthetic routes rely on a two-step process where the tertiary carbon center and the spirocycle ar...

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