反应详情

温度

65 °C

2,6-dimethylphenoxyacetylchloride is prepared in a separate vessel as follows: 2,6-dimethylphenoxyacetic acid, 5.4060 grams (29.99 mmol) is charged to a 50 mL round bottom flask equipped with a teflon-coated magnetic stir bar. Toluene, 15 mL is added stirring is initiated and thionyl chloride, 9.0 mL (123.3 mmol) is added followed by one drop of N,N-dimethylformamide at ambient temperature. After seven hours, the reaction mixture is heated to 65° C. for thirty minutes and allowed to cool to ambient temperature. The solution is concentrated at 60° C. and ca. 60 mm Hg pressure to remove all volatiles. The residue is diluted with toluene, 25 mL and reconcentrated. This is repeated a second time to give a final residue.

1. customequipped with a teflon-coated magnetic stir bar
2. temperatureto cool to ambient temperature
3. concentrationThe solution is concentrated at 60° C.
4. customca. 60 mm Hg pressure to remove all volatiles
5. additionThe residue is diluted with toluene, 25 mL