Adding a certain compound to certain chemical reactions, such as: 727356-19-6, 2-Bromo-6-(chloromethyl)pyridine, can increase the reaction rate and produce products with better performance than those obtained under traditional synthetic methods. Here is a downstream synthesis route of the compound, name: 2-Bromo-6-(chloromethyl)pyridine, blongs to pyridine-derivatives compound. name: 2-Bromo-6-(chloromethyl)pyridine
A214.1a (133 mmol) was dissolved in DMF (250 niL) and potassium phthalimide (54.2 g, 293 mmol) was added portionwise to maintain the internal temperature below 3O0C. An additional portion of DMF (50 mL) was used to rinse the flask and powder funnel used for the potassium phthalimide addition. The reaction was stirred at room temperature overnight after which the reaction was judged complete by HPLC analysis. Water (600 mL) was added slowly to the reaction and after 30 minutes of stirring the resulting precipitate was collected by filtration, washed with several portions of water (1000 mL total) and allowed to air dry. The resulting solid, which contained the desired product along with excess phthalimide, was resuspended in water (700 mL) and the solution was made basic by addition of 1 N NaOH (3 mL). After slurrying for 20 minutes the solids were collected by filtration, washed with several portions of water and allowed to air dry. The solid still contained some phthalimide so was resuspended in MeOH (50 mL) and water (800 mL) and allowed to stir vigorously for 2 days. The solid was again collected by filtration, then slurried in hot MeOH (200-300 mL), cooled to room temperature and filtered. The solid was air dried to afford the phthalimide adduct, A214.1, along with residual phthalimide as a white solid. This material was used without further purification for the next step.
At the same time, in my other blogs, there are other synthetic methods of this type of compound,727356-19-6, 2-Bromo-6-(chloromethyl)pyridine, and friends who are interested can also refer to it.
Reference:
Patent; BRISTOL-MYERS SQUIBB COMPANY; WO2006/122137; (2006); A1;,
Pyridine – Wikipedia,
Pyridine | C5H5N – PubChem