反应详情

To a 100 ml, three-necked, flask equipped with an agitator and a condensor were added 3.0 g (0.014 mol) of 4-hydroxy-4-chloromethyl-2-(dimethylaminomethyl)thiazoline (prepared as in Example 1), 45 ml of methanol and 4 ml of water. Potassium hydroxide [1.8 ml of a 45% (weight percent) aqueous solution] was added dropwise to the reaction solution at a rate such that the reaction temperature was maintained at room temperature. Once potassium hydroxide addition was completed, the reaction mixture was stirred at room temperature for an additional hour. A 1 ml sample of the reaction mixture was then removed from the flask, placed into a 50 ml volumetric flask and then diluted to volume with a 4:1 (v:v) acetonitrile/water solution. One milliliter of the diluted sample solution was then placed in a 25 ml volumetric flask and further diluted to volume with a 4:1 (v:v) acetonitrile/water solution. Ten microliters of this solution were then assayed using the HPLC assay technique described in Example 3. Such HPLC assay indicated that 85.5% of the thiazoline substrate had converted to the desired titled product.

1. customTo a 100 ml, three-necked, flask equipped with an agitator
2. customA 1 ml sample of the reaction mixture was then removed from the flask
3. customplaced into a 50 ml volumetric flask
4. additiondiluted to volume with a 4:1 (v:v) acetonitrile/water solution
5. customOne milliliter of the diluted sample solution was then placed in a 25 ml volumetric flask
6. additionfurther diluted to volume with a 4:1 (v:v) acetonitrile/water solution