... 51 .4, 53. 4, 63. 7, 78.0, 115.0, 1 23 . 4, 127 .3, 128 .9, 131 .6, 1 32 .2, 137 .2, 141 .0, 144 .7, 159 .2, 170.5, 1 72. 4, 1 72. 8 FTIR (KBr): 6 74, 1 137 , 1171, 1 23 2 , 1 34 6, 140 8, 1686, 1 736 , 29 43 , 29 74, 34 38 cm-1 ... 7.16-7.18 (m, 2H), 7 .41 -7 .49 (m, 3H) 13 C NMR ( 125 MHz CDCl3 ppm): δ 21 .1, 22 .6, 44 .4, 48 .3, 51 .4, 78 .4, 1 23 . 8, 126 .3, 129 .3, 129 .4, 130 .9, 131 .2, 1 32 .3, 139 .1, 141 .1, 145 .0, 168 .4, 171 .3, 1 72. 1 FTIR ... CDCl3 ppm): δ 21 .1, 22 .6, 44 .7, 47 .8, 51 .3, 78.0, 125 .3, 128 .0, 129 .0, 130 .2, 131 .4, 1 32 .3, 133 .3, 133 .4, 137 .4, 141 .1, 144 .9, 170 .3, 171 .4, 171.9 FTIR (KBr): 6 74, 1101, 1168, 1 34 9, 137 8, 147 6,...