Journal of Fluorine Chemistry p. 15 - 23 (2016)
Update date:2022-08-03
Topics:
Solodukhin, Nikolai N.
Borisova, Nataliya E.
Churakov, Andrei V.
Zaitsev, Kirill V.
Regioselective, simple and fast synthesis of a series of [2 + 3]-cycloaddition products, 2-11, 4-(4-RC2HN3)C6F4CO2Et (2: R = Ph; 3: R = CMe2OH; 4: R = CH2OH; 5: R = CO2Et; 6: R = n-C5H11; 7: R = CH2O-o-C6H4CHO; 8: R = CH2O-p-C6H4NHBoc; 9: R = CH2O-p-C6H4CH2OH; 10: R = CH2O2CC6F5; 11: R = p-C6H4Bu-t), in reaction between ethyl 4-azido-2,3,5,6-tetrafluorobenzoate, 1, and a number of substituted alkynes was elaborated under conditions of copper-catalyzed click chemistry reaction. The optimized conditions include application of CuBr and Et3N in dichloromethane. The structure of compounds 2-11 was investigated in solution by 1D and 2D NMR and IR spectroscopy. The molecular structure of 2 in solid state was established by X-ray analysis.
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