应用中的(R)-4-苄氧羰基-2-甲基哌嗪常作为医药中间体,主要用于生产驱肠虫药磷酸哌嗪、枸橼酸哌嗪,以及氟奋乃静、强痛定和利福平。它还能溶于乙醇,并在加入冰醋酸搅拌冷却后析出甲基哌嗪,用于合成激素类药物氢化泼尼松磷酸钠。(R)-4-苄氧羰基-2-甲基哌嗪与乙酐反应制得驱虫药哌硝噻唑的中间体甲酰哌嗪。
制备工艺如下:将5.025克(50.2毫摩尔)的(R)-2-甲基哌嗪溶解于100毫升二氯甲烷中。在0℃下滴加5.47克(25.1毫摩尔)的boc酸酐溶解于50毫升二氯甲烷中的溶液,然后将反应混合物在室温下搅拌1小时。过滤并减压浓缩溶液后,在残留物中加入100毫升水再次过滤。滤液用饱和K2CO3处理,并用三次各150毫升的乙醚萃取。合并后的有机层经过无水Na2SO4干燥,然后过滤并减压浓缩,最终得到5.04克固体形式的中间体(R)-4-苄氧羰基-2-甲基哌嗪。
中文名称 | 英文名称 | CAS号 | 化学式 | 分子量 |
---|---|---|---|---|
1-Boc-3-甲基哌嗪 | tert-butyl 3-methylpiperazine-1-carboxylate | 120737-59-9 | C10H20N2O2 | 200.281 |
中文名称 | 英文名称 | CAS号 | 化学式 | 分子量 |
---|---|---|---|---|
—— | (R)-tert-butyl 3,4-dimethylpiperazine-1-carboxylate | 1152110-24-1 | C11H22N2O2 | 214.308 |
—— | (R)-tert-butyl 4-(2-hydroxyethyl)-3-methylpiperazine-1-carboxylate | 1224707-70-3 | C12H24N2O3 | 244.334 |
—— | tert-butyl (3R)-3-methyl-4-(2-oxoethyl)piperazine-1-carboxylate | 1270981-63-9 | C12H22N2O3 | 242.318 |
—— | (R)-4-tert-butyl 1-methyl 2-methylpiperazine-1,4-dicarboxylate | —— | C12H22N2O4 | 258.318 |
—— | tert-butyl (R)-1-ethoxycarbonyl-2-methylpiperazin-4-carboxylate | 1163793-08-5 | C13H24N2O4 | 272.345 |
—— | (R)-tert-butyl 4-cyclobutyl-3-methylpiperazine-1-carboxylate | 1240914-37-7 | C14H26N2O2 | 254.373 |
—— | tert-butyl (3R)-3-methyl-4-[2-oxo-2-(propan-2-ylamino)ethyl]piperazine-1-carboxylate | —— | C15H29N3O3 | 299.414 |
—— | (R)-tert-butyl 4-carbamoyl-3-methylpiperazine-1-carboxylate | 1259013-98-3 | C11H21N3O3 | 243.306 |
BOC-2-甲基哌嗪甲酰氯 | tert-butyl (R)-4-(chlorocarbonyl)-3-methylpiperazine-1-carboxylate | 438050-54-5 | C11H19ClN2O3 | 262.736 |
(R)-4-叔丁氧羰-1-苄氧羰基-2-甲基-哌嗪 | 1-benzyl 4-(tert-butyl) (R)-2-methylpiperazine-1,4-dicarboxylate | 1163793-25-6 | C18H26N2O4 | 334.415 |
—— | tert-butyl (3R)-4-(aminosulfonyl)-3-methylpiperazine-1-carboxylate | 878387-59-8 | C10H21N3O4S | 279.36 |
—— | (R)-tert-butyl 3-methyl-4-(methylsulfonyl)piperazine-1-carboxylate | 1032757-86-0 | C11H22N2O4S | 278.373 |
—— | (R)-tert-butyl 3-methyl-4-phenylpiperazine-1-carboxylate | 1288977-98-9 | C16H24N2O2 | 276.379 |
—— | (R)-1-(4-bromophenyl)-4-tert-butoxycarbonyl-2-methylpiperazine | 1089686-77-0 | C16H23BrN2O2 | 355.275 |
—— | tert-butyl (3R)-4-(adamantane-1-carbonyl)-3-methylpiperazine-1-carboxylate | 1443748-08-0 | C21H34N2O3 | 362.513 |
—— | 4-(4-chloro-phenyl)-3-(R)-methyl-piperazine-1-carboxylic acid tert-butyl ester | 849107-17-1 | C16H23ClN2O2 | 310.824 |
—— | 1,1-dimethylethyl (3R)-3-methyl-4-(phenylcarbonyl)-1-piperazinecarboxylate | 1244740-21-3 | C17H24N2O3 | 304.389 |
—— | (R)-tert-butyl4-(5-(benzyloxy)pyrimidin-2-yl)-3-methylpiperazine-1-carboxylate | 1272973-67-7 | C14H22N4O3 | 294.354 |
—— | tert-butyl (R)-4-(5-bromopyrimidin-2-yl)-3-methylpiperazine-1-carboxylate | 1272973-68-8 | C14H21BrN4O2 | 357.25 |