Iodine → 2-(2-Dimethylaminoethoxy)ethyl Methacrylate

A magnesium methoxide solution was prepared by dissolving magnesium metal (4 g) in anhydrous methanol (100 ml) in the presence of a small amount of iodine (approximately 0.1 g). A portion of the resulting solution (18 ml) was placed in a 250 ml reaction vessel and then 2-(2-dimethylaminoethoxy)ethanol (23.6 g) was added, followed by the addition of phenothiazine (0.1 g) and methyl methacrylate (117 g). The mixture was stirred and heated until the methanol started to distill. When all of the methanol was collected, the mixture was cooled to room temperature and the solids were filtered off. The filtrate was subjected to fractionation under reduced pressure. The excess of methyl methacrylate was separated and then pure 2-(2-dimethylaminoethoxy)ethyl methacrylate was collected at 97-102° C./4 mmHg. Yield 22.1 g.

1. distillationto distill
2. customWhen all of the methanol was collected
3. filtrationthe solids were filtered off
4. customThe excess of methyl methacrylate was separated
5. custompure 2-(2-dimethylaminoethoxy)ethyl methacrylate was collected at 97-102° C./4 mmHg

ORDレコード

ord-d1ed5f33d9364e8cb4ab1b7b339ae5e7

出典データセット

uspto-grants-1999_07

DOI

10.6084/m9.figshare.5104873.v1

特許番号

US05925253