Water → 6-Hydroxyhexyl Methacrylate (stabilized with MEHQ)

Methacrylate acid (43.0 g=0.5 mole) was dissolved in 50 mL methanol. Tetrabutylammonium hydroxide (25% in methanol, 519 gm=0.5 mole) was added to the latter solution. The solution was stirred for 30 minutes, and then freed of solvent on a rotary evaporator. The residue was dissolved in 100 mL of N,N-dimethylformamide (DMF) and a solution of 6-chloro-1-hexanol (68.3 gm+0.5 mole) in 200 mL DMF was added. This was stirred at 50° C. for 4 hours, the heat was discontinued, and the solution was stirred at room temperature overnight. An equal volume of H2O was combined and the solution was extracted with three portions of ethyl acetate. The combined ethyl acetate layers were back-extracted with three portions of H2O, dried over MgSO4, and the mixture evaporated to an amber oil. 1H NMR (CDCl3): δ (ppm) 4.1 (2H, t). Elemental Analysis: C10H18O3, mol. wt. 186. Calcd.: C, 61.5; H, 9.7; O, 25.8. Found: C, 61.7; H, 9.7.

1. customfreed of solvent on a rotary evaporator
2. dissolutionThe residue was dissolved in 100 mL of N,N-dimethylformamide (DMF)
3. stirringThis was stirred at 50° C. for 4 hours
4. stirringthe solution was stirred at room temperature overnight
5. extractionthe solution was extracted with three portions of ethyl acetate
6. extractionThe combined ethyl acetate layers were back-extracted with three portions of H2O
7. dry with materialdried over MgSO4
8. customthe mixture evaporated to an amber oil

ORD record

ord-c289ff9aaeeb49b78ac29ed8ce9007ae

Source dataset

uspto-grants-1987_09

DOI

10.6084/m9.figshare.5104873.v1

Patent number

US04696990