The GC-MS analysis were performed on a Focus GC (Thermo Electron Corporation, Bremen, Germany) equipped with a DB-5MS capillary column (30m, 0.25mm i.d., 0.25μm film thickness) and a DSQ mass spectrometer as a detector (Thermo Electron corporation, Bremen, Germany). The carrier gas was helium, at a flow rate of 1 mL/min. Column temperature was initially 70 °C for 2 min, then gradually increased to 310°C at 15 °C/min and finally kept at 310 °C for 10min. The injector temperature was 220 °C and the transfer line temperature was 280 °C. For GC-MS detection an electron ionization system was used with electron energy of 70 eV, and the mass analyzer was a simple quadrupole.

The GC analysis for the preparation of 1,2,3-TMP were performed on a GC-2025 Gas Chromatograph (Shimadzu) equipped with a ZB-5-MS column (30.0m, 0.25mm i.d., 025μm film thickness). The carrier gas was N2, at a flow rate of 1.27 mL/min. Column temperature was initially 40 °C for 4 min, then gradually increased to 200 °C at 15 °C/min and finally kept at 200 °C for 15 min. The injector temperature was 250 °C and for detection a FID was used (280 °C).