Preparation of N-substituted sulfoximines by benzotriazole methodology
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چکیده
منابع مشابه
ATTEMPTED PREPARATION OF N-SUBSTITUTED DIPHENYLCYCLOPROPENEIMINE N-OXIDE
The reaction of diphenylcyclopropenone with several N-substituted hydroxylamine and primary amines are investigated. Most of these reactions led to ring opened or ring enlarged products, instead of the desired N-Oxide or imine. The reaction of cyclopropeneimine with peracid-another possible route to N-substituted cyclopropeneimine N-Oxide is studied. Most of the unexpected products are ide...
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eernpounds,2) This prompted us to devise a general synthetic method for N-substituted 4-arylpyrrolones. rv-Unsubstituted 4-(4-chlorophenyl)pyrrolone has been prepared from 4-bromo-3-(4-chlorophenyl)-2-butenoic acid with a largc excess ammonia water,i) However, the application of this method, using excess arnines in an aqueous so[ution, would be Iimited, rv-Substitutcd arylpyrrelones may be prep...
متن کاملSynthesis and bioactivity of new phosphorylated R,R'-substituted sulfoximines.
R,R'-disubstituted sulfoximines were phosphorylated with O,O-diethylchloro phosphate and phosphorothionate to obtain new organophosphorus compounds. After purification they were characterized by GC-MS and (1)H-NMR. The toxicity of the synthesized O,O-diethyl N-(R,R'-disubstituted sulfoximine) phosphoro-amidothionates was assayed on Musca domestica. It was found that the methyl phenyl derivative...
متن کاملCopper-catalyzed N-methylation/ethylation of sulfoximines.
A protocol for the copper-catalyzed N-methylation of sulfoximines with di-tert-butyl peroxide (DTBP) was developed. This protocol has good functional group tolerance leading to N-methylated sulfoximines in moderate to good yields. Besides, N-ethylation of sulfoximines was achieved in the presence of bis(1,1-dimethylpropyl)peroxide as the ethylating agent under a standard procedure.
متن کاملThermal analysis of N-carbamoyl benzotriazole derivatives.
Thermal properties of N-carbamoyl benzotriazole derivatives and N,N',N''-tribenzyloxyisocyanuric acid were investigated using thermogravimetric analysis and differential scanning calorimetry. The results revealed a difference between structural analogs of N-carbamoyl benzotriazole derivatives. They seem to be in agreement with the previously proposed formation of N,N',N''-tribenzyloxyisocyanuri...
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ژورنال
عنوان ژورنال: Arkivoc
سال: 2004
ISSN: 1551-7012
DOI: 10.3998/ark.5550190.0004.f13