The Influence of Nucleophile Substituents on the Orientation in the Reaction between 2,4-Difluoronitrobenzene and Lithium Phenoxides in Liquid Ammonia
✍ Scribed by Larisa Politanskaya; Evgenij Malykhin; Vitalij Shteingarts
- Publisher
- John Wiley and Sons
- Year
- 2001
- Tongue
- English
- Weight
- 328 KB
- Volume
- 2001
- Category
- Article
- ISSN
- 1434-193X
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## Abstract An influence of a structure of the amine (benzylamine, __N__‐methyl‐benzylamine, __N__‐isopropyl‐benzylamine, __N__‐methyl‐butylamine, __N__‐ethyl‐butylamine, __sec__‐butylamine, and __tert__‐butylamine) on a rate constant of the ring‐opening reaction of 4‐benzylidene‐2‐methyl‐5‐oxazolo
Under chemical ionization (CI) conditions, cis and trans 1,2-indanediols mainly react with the NH 3 /NH 4 + system via a nucleophilic substitution process. In the CI source several mechanisms can occur yielding the substituted [M + NH 4 -H 2 O] + ions at m/z 150. Collisionally activated reaction (CA
## Abstract ChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract, please click on HTML or PDF.
Two competitive processes -1,3-dipolar cycloaddition and nucleophilic addition -in the reaction of 4,4,5,5-tetramethyl-4,5-dihydro-1H-imidazole 3-oxides with asymmetrically substituted alkynes were shown to occur. The influence of solvents and the nature of substituents in the reagent and substrate