Supplementary material (ESI) for Green Chemistry This journal is © The Royal Society of Chemistry 2007 Supplementary Information + - 1、The NMR and ESI-MS spectra of [NMP] CH3SO3 2、The GC-MS spectra of esters (entries 1-19) + - The NMR and ESI-MS spectra of [NMP] CH3SO3 5000 4000 3000 2000 1000 0 15.0 10.0 5.0 ppm (t1) The GC-MS spectra of esters (entries 1-19) (1) The GC-MS spectrum of propyl acetate 0.69min, solvent of chloroform; 0.97min, propyl acetate The MS spectra of propyl acetate (0.97min) (2) The GC-MS spectrum of isopropyl acetate 1.98min, isopropyl acetate The MS spectrum of isopropyl acetate (1.98min) (3) The GC-MS spectrum of butyl acetate 2.90min, butyl acetate 4(ZHANG) #665 RT: 3.61 AV: 1 NL: 2.56E7 T: + c Full ms [ 14.00-400.00] 72.85 100 90 80 70 85.85 41.88 60 50 40 Relative Abundance 57.88 30 20 100.93 10 135.97154.12 207.58 253.45 280.90 355.76 0 50 100 150 200 250 300 350 400 m/z The MS spectrum of butyl acetate (2.90min) (4) The GC-MS spectrum of isopentyl acetate 2.20min, isopentyl acetate 3(ZHANG) #405 RT: 2.98 AV: 1 NL: 2.71E7 T: + c Full ms [ 14.00-400.00] 86.89 100 90 80 70 60 41.86 50 40 85.90 Relative Abundance Relative 57.85 30 20 69.89 10 87.91 88.94 121.16 158.00 207.11 226.90 280.98 314.33 356.16 0 50 100 150 200 250 300 350 400 m/z The MS spectrum of isopentyl acetate (2.2min) (5) The GC-MS spectrum of pentyl acetate 3.54min, pentyl acetate The MS spectrum of pentyl acetate (3.54min) (6) The GC-MS spectrum of hexyl acetate 4.15min, hexyl acetate 1 #920 RT: 3.08 AV: 1 NL: 5.24E7 T: + c Full ms [ 45.00-400.00] 72.88 100 90 80 70 60 50 40 Relative Abundance Relative 30 99.96 20 55.94 10 73.96 115.00 143.10178.92 206.98 249.13281.05 327.11 355.17 398.28 0 50 100 150 200 250 300 350 400 m/z The MS spectrum of hexyl acetate (4.15min) (7) The GC-MS spectrum of heptyl acetate 4.71min, heptyl acetate The MS spectrum of heptyl acetate (4.71min) (8) The GC-MS spectrum of octyl acetate 5.91min, octyl acetate The MS spectrum of octyl acetate (4.71min) (8) The GC-MS spectrum of ethyl benzoate 5.15 min, ethyl benzoate The MS spectrum of ethyl benzoate (5.15min) (9) The GC-MS spectrum of ethyl propionate 2.25min, ethyl propionate The MS spectrum of ethyl propionate (2.25min) (10) The GC-MS spectrum of butyl propionate 2.49min, butyl propionate The MS spectrum of butyl propionate (2.49min) (11) The GC-MS spectrum of butyl 2-hydroxypropanoate 7.02min, butyl 2-hydroxypropanoate The MS spectrum of butyl 2-hydroxypropanoate (7.02min) (12) The GC-MS spectrum of dibutyl oxalate 6.00min, dibutyl oxalate The MS spectrum of dibutyl oxalate (6.00min) (13) The GC-MS spectrum of butyl 2-hydroxypropanoate 4.24min, butyl 2-hydroxypropanoate 9 #1655 RT: 4.23 AV: 1 NL: 1.56E7 T: + c Full ms [ 45.00-450.00] 56.9 100 90 80 70 60 50 40 Relative Abundance Relative 84.9 30 20 74.9 10 90.9 102.9 147.0 192.9 210.9 266.9 284.9 325.1 357.2 439.0 0 50 100 150 200 250 300 350 400 450 m/z The MS spectrum of butyl 2-hydroxypropanoate (4.24min) （14）The GC-MS spectrum of ethyl cinnamate 6.60min, ethyl cinnamate The MS spectrum of ethyl cinnamate (6.60min) (15) The GC-MS spectrum of ethyl benzoate 5.15min, ethyl benzoate The MS spectrum of ethyl benzoate (5.15min) (16) The GC-MS spectrum of methyl dodecanoate 6.70min, ethyl dodecanoate The MS spectrum of ethyl dodecanoate (6.70min) (17) The GC-MS spectrum of ethyl dodecanoate 6.98min, ethyl dodecanoate The MS spectrum of ethyl dodecanoate (6.98min) (18) The GC-MS spectrum of methyl stearate 8.97min, methyl stearate The MS spectrum of ethyl dodecanoate (8.97min) (19) The GC-MS spectrum of (E)-methyl octadec-9-enoate 8.83min, (E)-methyl octadec-9-enoate The MS spectrum of (E)-methyl octadec-9-enoate (8.83min) .