Ngày tải lên :
22/06/2016, 23:48
... 127,2; 128,6; 129,8; 130 ,3; 130 ,6; 130 ,8; 132 ,5; 133 ,8; 137 ,4; 139 ,4; 141,1; 144,1 IR (KBr, cm-1): VNH = 32 54; vmax = 1450; 133 4; 1269; 1185; 1159; 1140; 1115; 10 93; 7 43; 662 MS (70 eV): m/z (%): ... Hz, H-2); 4 ,32 (1H, t, J=9,5 Hz, H-3a), 4,15 (1H, t, J=8,0 Hz, H-1); 3, 99 (1H, t, J=11 Hz, H-3b); 2, 43 (3H, s, CH3); 1 ,35 (9H, s, 3xCHs-ter-); 1,27 (3, s, 3xCH3-ter-) 13 C NMR (CDCl3, 125 MHz) ... 1,88 (1H, bs); 3, 34 -3, 40 (1H, m); 3, 63 (1H, dd, J = 11,6, 6,6 Hz); 3, 77 (1H, dd, J = 11,6, 3, 9 Hz); 3, 81 (3H, s); 3, 86 3, 94 (2H, X d, J = 13, 2 Hz); 6,86-6,91 7, 23- 7 ,35 (4H, X m) 13 C NMR (75 MHz,...