Substrate dependent synergetic and antagonistic interaction of ammonium halide and polyoxometalate catalysts in the synthesis of cyclic carbonates from oleo epoxides and CO2
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چکیده
H-NMR (400 MHz, CDCl3): δ = 0.81 (t, J=6.4 Hz, 3H, H19), 1.12-1.48 (m, 24H, H5-H9; H12-H18), 1.49-1.62 (m, 2H, H4), 2.23 (t, J=7.5 Hz, 2H, H3), 2.83 (brs, 2H, H10-H11), 3.59 (s, 3H, H1) ppm. C-NMR (100 MHz, CDCl3): δ = 14.1 (C19, CH3), 22.7 (C18, CH2), 24.9 (C4, CH2), 26.6 (CH2), 26.6 (CH2), 27.8 (CH2), 27.8 (CH2), 29.0 (CH2), 29.2 (CH2), 29.2 (CH2), 29.3 (CH2), 29.5 (CH2), 29.6 (CH2), 31.9 (C17, CH2), 34.0 (C3, CH2), 51.4 (C1, CH3), 57.2 (C10, CH), 57.2 (C11, CH), 174.2 (C2, C) ppm. GC (150 °C, 6 °C/min, 280 °C): rt = 13.5 min. Methyl 8-(5-octyl-2-oxo-1,3-dioxolan-4-yl)octanoate 3:
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