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CAS No. : | 519032-08-7 | MDL No. : | MFCD12026362 |
Formula : | C17H19N3O6 | Boiling Point : | - |
Linear Structure Formula : | - | InChI Key : | NIVUTAZNLHLBAN-UHFFFAOYSA-N |
M.W : | 361.35 | Pubchem ID : | 135446261 |
Synonyms : |
|
Signal Word: | Warning | Class: | N/A |
Precautionary Statements: | P261-P280-P305+P351+P338 | UN#: | N/A |
Hazard Statements: | H302-H315-H319-H332-H335 | Packing Group: | N/A |
GHS Pictogram: |
* All experimental methods are cited from the reference, please refer to the original source for details. We do not guarantee the accuracy of the content in the reference.
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
58% | Stage #1: at 20℃; for 2 h; Stage #2: With xylene In methanol at 90 - 120℃; for 16 h; Inert atmosphere |
Benzyl 2-amino-2-(hydroxyimino)-1,1-dimethylethylcarbamate (2.0 g, 8.0 mmol) was dissolved in 30 mL MeOH, dimethyl acetylenedicarboxylate (DMAD, 1.1 mL, 9.0 mmol) was added slowly. The mixture was stirred for 2 h at room temperature, and then concentrated under reduced pressure to give a white oil. The mixture of the oil and 80 mL xylene was stirred at 90 °C for 2 h and 120 °C for 2 h, then refluxed for 12 h under nitrogen, concentrated to yield the crude product. The crude product was recrystallized with 2 mL MeOH and 10 mL tert-butyl methyl ether to afford 5 as a yellow solid (1.7 g, 58 percent): 1H-NMR (DMSO-d6) δ: 7.35 (m, 5H), 5.00 (s, 2H), 3.83 (s, 3H), 1.48 (s, 6H); ESI-MS m/z 360 (M)-, 384 (M+Na) +. |
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