29006-02-8

基本信息
甲基-一聚乙二醇-酸
甲基-一聚乙二醇-丁酸
m-PEG1-CH2-acid
Einecs 249-366-5
m-PEG1-(CH2)3-acid
4-methoxybutanoicaci
4-methoxybutyric acid
Butanoic acid, 4-methoxy-
物理化學(xué)性質(zhì)
常見問題列表

29006-01-7

29006-02-8
實(shí)施例25:將4-甲氧基丁酸甲酯(1.0g,7.57mmol)溶于四氫呋喃(THF,20mL)中,加入氫氧化鋰(LiOH,0.362g,15.13mmol)的水(H2O,5mL)溶液。反應(yīng)混合物在室溫下攪拌16小時。反應(yīng)完成后,將混合物濃縮至干,用2M鹽酸(HCl)酸化,加水(H2O)稀釋,用乙酸乙酯(EtOAc,2×)萃取。合并有機(jī)相,用飽和食鹽水(鹽水)洗滌,無水硫酸鈉(Na2SO4)干燥,濃縮至干,得到4-甲氧基丁酸(860mg,96%)為粘稠油狀物。1H NMR(400MHz,DMSO-d6):δ12.02(s,1H),3.28(t,J=6.4Hz,2H),3.19(s,3H),2.21(t,J=7.4Hz,2H),1.69(m,2H)。
參考文獻(xiàn):
[1] Patent: US2014/275080, 2014, A1. Location in patent: Paragraph 0446
[2] Patent: US2006/264489, 2006, A1. Location in patent: Page/Page column 87
[3] Patent: US2007/49603, 2007, A1. Location in patent: Page/Page column 90
[4] Patent: WO2009/50204, 2009, A1. Location in patent: Page/Page column 62
[5] Patent: WO2015/180612, 2015, A1. Location in patent: Page/Page column 52