Ethylene Oxide → 2-Furanethanol, 5-Methyl-

A solution of n-BuLi (83.0 mL, 133 mmol, 1.6 M in hexanes) was added to a stirred solution of 2-methylfuran (10.0 mL, 111 mmol) in THF (85 mL) at 0° C. under nitrogen. The reaction mixture was stirred for 4 h at room temperature and cooled to 0° C. Ethylene oxide (8.30 mL, 166 mmol) was added drop wise and the reaction mixture was allowed to warm to room temperature over 16 h. Saturated aqueous ammonium chloride was added, the resulting layers were separated, and the aqueous layer was extracted with diethyl ether (2×250 mL). The combined organic layers were dried over anhydrous Na2SO4 and concentrated under reduced pressure. Distillation at atmospheric pressure (170-185° C.) gave 10.1 g (80.3 mmol, 72%) of Preparation 1A as a light yellow oil.

1. temperaturecooled to 0° C
2. temperatureto warm to room temperature over 16 h
3. customthe resulting layers were separated
4. extractionthe aqueous layer was extracted with diethyl ether (2×250 mL)
5. dry with materialThe combined organic layers were dried over anhydrous Na2SO4
6. concentrationconcentrated under reduced pressure
7. distillationDistillation at atmospheric pressure (170-185° C.)
8. customgave

ORDレコード

ord-28e01f82b39a48f08fae0783addc77b5

出典データセット

uspto-grants-2011_11

DOI

10.6084/m9.figshare.5104873.v1

特許番号

US08067582B2