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. Author manuscript; available in PMC: 2017 May 27.
Published in final edited form as: Chem Asian J. 2017 Apr 20;12(10):1048–1051. doi: 10.1002/asia.201700354

Figure 2.

Figure 2

UV/Vis absorption spectra of 1a during the CO2 fixation reaction of propylene oxide to 4-methyl-1,3-dioxolan-2-one. Solid black line: 1a in propylene oxide at 20°C; dotted green line: after addition of propylene oxide, TBAB and CO2 bubbling; dashed red line: after full conversion of propylene oxide to cyclic carbonate 3.