Thionyl Chloride → 5-Chloro-2-(chloromethyl)pyridine

To a mixture of (5-chloro-pyridine-2-yl)-methanol (706 mg, 4.92 mmol) described in Manufacturing Example 63-1-1 and dichloromethane (70 mL) was added thionyl chloride (539 μL, 7.38 mmol), which was stirred for 1 hour at room temperature. Saturated aqueous sodium hydrogencarbonate solution was added to the reaction mixture, which was then extracted with dichloromethane. The organic layer was separated, washed with water and saturated aqueous sodium chloride, dried over anhydrous magnesium sulfate, and filtered. The filtrate was concentrated under a reduced pressure to obtain the title compound (620.0 mg, 78%).

1. extractionwas then extracted with dichloromethane
2. customThe organic layer was separated
3. washwashed with water and saturated aqueous sodium chloride
4. dry with materialdried over anhydrous magnesium sulfate
5. filtrationfiltered
6. concentrationThe filtrate was concentrated under a reduced pressure

ORDレコード

ord-d71a50e3705e48bbb9653d1ac20471d6

出典データセット

uspto-grants-2010_04

DOI

10.6084/m9.figshare.5104873.v1

特許番号

US07691882B2