1239319-91-5

基本信息
N-BOC-6-氮杂螺[3,4]辛烷-2-醇
6-BOC-2-羟基-6-氮杂螺[3.4]辛烷
2-羟基-6-氮杂螺[3.4]辛烷-6-羧酸叔丁酯
6-Boc-6-azaspiro[3.4]octan-2-ol
N-Boc-2-hydroxy-6-aza-spiro[3.4]octane
6-Boc-2-hydroxy-6-aza-spiro[3.4]octane
tert-Butyl 2-Hydroxy-6-azaspiro[3.4]octane-6-carboxylate
tert-butyl 2-(tosyloxy)-6-azaspiro[3.4]octane-6-carboxylate
2-Hydroxy-6-azaspiro[3.4]octane-6-carboxylic acid 1,1-dimethylethyl ester
6-Azaspiro[3.4]octane-6-carboxylic acid, 2-hydroxy-, 1,1-dimethylethyl ester
6-Azaspiro[3.4]octane-6-carboxylic acid, 2-hydroxy-, 1,1-dimethylethyl ester - A7189
物理化学性质
制备方法
![6-BOC-2-氧代-6-氮杂螺[3.4]辛烷](/CAS/GIF/203661-71-6.gif)
203661-71-6
![2-羟基-6-氮杂螺[3.4]辛烷-6-羧酸叔丁酯](/CAS/GIF/1239319-91-5.gif)
1239319-91-5
以6-Boc-2-氧代-6-氮杂螺[3.4]辛烷为起始原料,合成2-羟基-6-氮杂螺[3.4]辛烷-6-羧酸叔丁酯的一般步骤如下:在0℃下,向6-Boc-2-氧代-6-氮杂螺[3.4]辛烷(19g,84.3mmol)的四氢呋喃(THF,200mL)溶液中缓慢加入硼氢化钠(NaBH4,12.8g,337.2mmol)。加毕,将反应混合物逐渐升温至环境温度,并持续搅拌6小时。反应完成后,用甲醇(MeOH)和水(H2O)淬灭反应,随后用乙酸乙酯(EtOAc)萃取。合并有机层,用饱和食盐水(brine)洗涤,无水硫酸钠(Na2SO4)干燥,减压浓缩。粗产物通过快速柱色谱法纯化(硅胶(SiO2)为固定相,洗脱剂为石油醚(Hep)至50%乙酸乙酯(EtOAc)的石油醚溶液),得到目标产物2-羟基-6-氮杂螺[3.4]辛烷-6-羧酸叔丁酯(R-6,12g,产率63%)。
参考文献:
[1] Patent: US2014/45813, 2014, A1. Location in patent: Paragraph 0114
[2] Patent: US2014/275014, 2014, A1. Location in patent: Paragraph 0128; 0129; 0133
[3] Patent: WO2015/116485, 2015, A1. Location in patent: Page/Page column 24; 25
[4] Patent: US2011/319381, 2011, A1. Location in patent: Page/Page column 10
[5] Patent: US2012/129830, 2012, A1. Location in patent: Page/Page column 10