Ngày tải lên :
25/03/2014, 12:21
... 34 36, 2 930 , 1724, 1669, 1601, 14 63, 136 2, 1160, 1028, 832 ; 1H-NMR(CDCl3), (ppm): 12,60 (1H,s), 7,75 (1H,d), 7,66 (1Hdd), 7, 23 (1H,d), 6, 53 (1H,s), 3, 93 (3H,s), 3, 92 (3H,s), 3, 85 (3H,s), 3, 18 (3H,s), ... 1 03 - 105C; IR (KBr), (cm-1): 2960, 1759, 1 630 , 1625, 1469, 1417, 135 2, 1224, 1 139 , 8 23, 1H-NMR (CDCl3), (ppm): 7,72 (1H,d), 7, 63 (1H,dd), 7,16 (1H,d), 6,88 (1H,s), 3, 93 (3H,s), 3, 90 (3H,s), 3, 79 ... = 93 - 95C; IR (KBr), (cm-1): 2926, 1757, 1 630 , 1610, 1469, 136 3, 1224, 1096, 820; 1H-NMR( CDCl3), (ppm): 7, 73 (1H,d), 7, 63 (1H,dd),7,16 (1H,d), 6,88 (1H,s), 3, 93 (3H,s), 3, 90 (3H,s), 3, 79 (3H,s),...