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N-Methylacetamide is a flammable, difficult to ignite, hygroscopic, crystalline, colourless solid with a faint odor that is soluble in water. [1] Several isomeric forms are known. [8] [9] In solution, it is 97–100% present as the Z isomer with a polymeric structure. [10] [4] The compound has a high dielectric constant of 191.3 at 32 °C. [11]
In chemistry, a zwitterion (/ ˈ t s v ɪ t ə ˌ r aɪ ə n / TSVIT-ə-ry-ən; from German Zwitter 'hermaphrodite'), also called an inner salt or dipolar ion, [1] is a molecule that contains an equal number of positively and negatively charged functional groups. [2] 1,2-dipolar compounds, such as ylides, are sometimes excluded from the ...
Acetamide (systematic name: ethanamide) is an organic compound with the formula CH 3 CONH 2. It is an amide derived from ammonia and acetic acid. It finds some use as a plasticizer and as an industrial solvent. [5] The related compound N,N-dimethylacetamide (DMA) is more widely used, but it is not
The chemical reactions of dimethylacetamide are typical of N,N-disubstituted amides. Hydrolysis of the acyl-N bond occurs in the presence of acids: CH 3 CON(CH 3) 2 + H 2 O + HCl → CH 3 COOH + (CH 3) 2 NH 2 + Cl −. However, it is resistant to bases. For this reason DMA is a useful solvent for reactions involving strong bases such as sodium ...
Bis(trimethylsilyl)acetamide (BSA) is an organosilicon compound with the formula MeC(OSiMe 3)NSiMe 3 (Me = CH 3). It is a colorless liquid that is soluble in diverse organic solvents, but reacts rapidly with moisture and solvents containing OH and NH groups .
The Suárez modification of the Hofmann–Löffler–Freytag reaction was the basis of the new synthetic method developed by H. Togo et al. [42] [43] The authors demonstrated that various N-alkylsaccharins (N-alkyl-1,2-benzisothiazoline-3-one-1,1,-dioxides) 77 are easily prepared in moderate to good yields by the reaction of N-alkyl(o-methyl ...
N-Methyl-2-pyrrolidone (NMP) is an organic compound consisting of a 5-membered lactam. It is a colorless liquid, although impure samples can appear yellow. It is miscible with water and with most common organic solvents. It also belongs to the class of dipolar aprotic solvents such as dimethylformamide and dimethyl sulfoxide.
The vast majority of these procedures utilize the commercially available salt N,O-dimethylhydroxylamine hydrochloride [MeO(Me)NH•HCl], which is typically easier to handle than the free amine. [6] Treatment of an ester or lactone with AlMe 3 or AlMe 2 Cl affords the corresponding Weinreb amide in good yields. Alternatively, non-nucleophilic ...