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- W2186875397 abstract "Obtaining of N-carbamylamic acids (also called uric acids), better known as maleuric acids by fusing cyclic anhydrides with urea or monosubstituted ureas in glacial acetic acid at 50-60°C, for 12 h is the method described in the literature [1,2]. The 1H-NMR and 13C-NMR spectra were recorded on a Bruker DPX 200 MHz NMR spectrometer (200 and 50 MHz, respectively). Nitrobenzene was distilled before use. Succinic, maleic and phthalic anhydrides, urea, N-methyl urea and N-ethyl urea were purchased from chemical suppliers and used without further purification. Aromatic ureas were prepared according to literature data [7] and N-tert-butyl urea was prepared according to literature data [8]." @default.
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- W2186875397 date "2011-01-01" @default.
- W2186875397 modified "2023-09-24" @default.
- W2186875397 title "Synthesis of Various N-carbamylamic Acids" @default.
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