نتایج جستجو برای: vilsmeier haack reaction
تعداد نتایج: 412538 فیلتر نتایج به سال:
N,N-Diaryl aminostilbenes and N,N-diaryl aminostyrenes are versatile compounds that have found exciting applications in the field of photochemistry; most of these compounds are patented and they are widely used as electro-photographic photoconductors and photoreceptors. Recent reports have demonstrated, for example, that these compounds can exhibit an amino-conjugation effect in their fluoresce...
we describe here a suitable approach for the synthesis of n-unsubstituted monocyclic b-lactams under mild reaction conditions by the annelation of imines with substituted acetylchlorides. in this method the reaily available phtalimidoacetyl chloride were allowed to react with - dibenzylideneiminotoluene (hydrobenzamide) in the presence of an equimolar amount of triethylamine in refluxing toluen...
1- in a search directed to the reaction of compound)23(the cycloaddition reaction of 1,3- diphenylisobenzofurane)14(with p-benzoquinone)19(,followed by addition of cyclopentadiene was carried out.the specific spacial stracture of its ir,nmr,mass spectra. 2- in another attempt the kinetic stability and behavior of compounds)20(and)23(was studied.the main subject of this study was the highly reve...
Abstract The knower paradox states that the statement ‘We know this is false’ leads to inconsistency. This article presents a fresh look at and some well-known solutions from literature. Paul Égré discusses three possible modal provability logic provides for by surveying comparing different interpretations of modality, originally described Skyrms, Anderson, Solovay. In article, background expla...
A new series of novel derivatives of pyrazole were synthesized. These derivatives were identified on the basis of melting point range, Rf values, IR and 1H NMR spectral analysis. The derivatives were screened for antiinflammatory and analgesic activities. The derivatives exhibited significant to moderate anti-inflammatory and analgesic activities. Cite this article as: Abhay Kumar Verma, Alex M...
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