反应详情

cis-2,6-Dimethyl-piperazine-1-carboxylic acid 6-(3-methyl-butoxy)-pyridin-3-ylmethyl ester was prepared from [6-(3-Methyl-butoxy)-pyridin-3-yl]-methanol (0.19 g), sodium hydride (60%, 0.048 g) and 4-tert-butoxycarbonyl-1-chlorocarbonyl-cis-2,6-dimethylpiperazine (0.25 g) according to the method described in Example 54 to give the product as a pale oil (0.052 g, 13%): δH (400 MHz, CDCl3) 8.15 (1H, d, J 2.5 Hz), 7.58 (1H, dd, J 8.5, 2.5 Hz), 6.71 (1H, d, J 8.5 Hz), 5.07 (2H, s), 4.32 (2H, t, J 7 Hz), 4.18 (2H, m), 3.95 (2H, m), 2.95 (2H, m), 1.81 (1H, nonet, J 7 Hz), 1.67 (2H, q, J 7 Hz), 1.47 (9H, s), 1.22 (6H, d, J 7 Hz) and 0.96 (6H, d, J 6.5 Hz); HPLC (XTERRA, 50/80, 235 nm) 91% (7.19 min).