Research Article
Full N,N-Methylation of 4,4′-Methylenedianiline with Dimethyl Carbonate: A Feasible Access to 4,4′-Methylene bis(N,N-Dimethylaniline)
Figure 2
MS spectra of the by-products 1, 2, and 3. Subfigures (a), (b), and (c) present the MS spectra of the pseudomolecular ions of compounds 1, 2, and 3, respectively. 4 stands for the ion with an m/z value of 106.
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(b) |
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