88987-42-2

基本信息
叔丁酯-5-溴戊酸
tert-butyl 5-bromopentanoate
5-BROMOPENTANOIC ACID, T-BUTYL ESTER
Pentanoic acid, 5-bromo-, 1,1-dimethylethyl ester
物理化學(xué)性質(zhì)
制備方法

2067-33-6

75-65-0

88987-42-2
將5-溴戊酸(5g,27.62mmol)溶解于無(wú)水二氯甲烷(DCM)中,將溶液調(diào)至室溫并在冰浴冷卻下攪拌。依次加入N,N'-二甲基氨基吡啶(DMAP,1.68g,13.75mmol)和二環(huán)己基碳二亞胺(DCC,6.83g,33.15mmol)。反應(yīng)半小時(shí)后,向混合物中加入叔丁醇(15.8ml,165.75mmol)。將反應(yīng)溶液在室溫下攪拌過(guò)夜。反應(yīng)完成后,用二氯甲烷稀釋反應(yīng)混合物,并依次用水和鹽水洗滌。分離有機(jī)層,用無(wú)水硫酸鈉干燥,減壓蒸發(fā)去除溶劑。粗產(chǎn)物通過(guò)硅膠柱色譜法純化,洗脫劑為己烷-乙酸乙酯(1%),得到純的5-溴戊酸叔丁酯4.1g(產(chǎn)率62.6%),為淺黃色液體。
參考文獻(xiàn):
[1] Patent: WO2015/6740, 2015, A2. Location in patent: Page/Page column 182; 183
[2] Patent: WO2016/154241, 2016, A1. Location in patent: Paragraph 670; 671
[3] European Journal of Organic Chemistry, 2018, vol. 2018, # 37, p. 5180 - 5192
[4] Patent: KR101569966, 2015, B1. Location in patent: Paragraph 0145; 0146
[5] Patent: WO2011/53519, 2011, A1. Location in patent: Page/Page column 27-28