over anhydrous magnesium sulfate the resulting solution was concentrated under reduced pressure at 25 mm hg pressure and the product collected at 55 u00b0 60 u00b0 c 1 42 g 63 yield ir neat u03bd cm 1 2980 2940 2830 2150 1460 1435 1390 1370 1080 1 hnmr 200mhz cdcl 3 u03b4 ppm 1 28 s 6h 2ch 3 3 26 s 3h och 3 3 38 t 2h ch 2 13 cnmr 200mhz cdcl 3 u03b4 ppm 22 47 s 2ch 3 49 97 s och 3 50 57 t ch 2 str8 n bromosuccinimide 3 56 g 0 02 mol was dissolved in ethanol the product was obtained by procedures analogous to those described in example 1 95 yield ir neat u03bd cm 1 2980 2940 2900 2880 1460 1440 1380 1360 1120 1068 1 hnmr 200mhz cdcl 3 u03b4 ppm 1 19 t 3h ch 3 1 31 s 6h 2ch 3 3 44 m 4h ch 2 and och 2 13 cnmr 200mhz cdcl 3 u03b4 ppm 16 01 s ch 3 24 48 s 2ch 3 41 23 s ch 2 br 57 31 s och 2 str9 the product was obtained by procedures analogous to those described.