Sulfuric Acid → HCID 59079400, compound

Temperature

0 °C

Chromium trioxide (25 g, 164 mmol) was dissolved into 300 mL of 1.5 M H2SO4 and the solution was cooled to 0° C. Compound 2-[2-(2-chloroethoxy)ethoxy]ethanol (8.3 g, 49 mmol) in 150 mL acetone was added into the Jones reagent dropwise and the reaction mixture was stirred at room temperature for 6 h. The acetone was removed by evaporation under vacuum and the aqueous phase was extracted with DCM (3×100 mL). After the combined organic phase was dried over MgSO4, the 2-[2-(2-chloroethoxy)ethoxy]acetic acid (6.3 g, 70% yield) was obtained by removed the solvent by rotary evaporation. IR: (cm−1) 1734 (C═O). 1H NMR (CDCl3, 300 MHz): δ 10.49 (b, 1H), 4.23 (s, 2H), 3.80 (t, J=5.8 Hz, 4H), 3.74 (t, J=5.7 Hz, 2H), 3.66 (t, J=5.8 Hz, 2H). 13C NMR (CDCl3, 75 MHz): δ 174.4, 71.4, 71.1, 70.4, 68.5, 42.6.

1. customThe acetone was removed by evaporation under vacuum
2. extractionthe aqueous phase was extracted with DCM (3×100 mL)
3. dry with materialAfter the combined organic phase was dried over MgSO4

ORD record

ord-5bd1a343338d4c4290e661ebf9bf5d32

Source dataset

uspto-grants-2016_08

DOI

10.6084/m9.figshare.5104873.v1

Patent number

US09416210B2