Pyridine → HCID 57444533, compound

To a suspension of magnesium chloride (3.01 g) in tetrahydrofuran (30 mL) was added tert-butyl 3-oxobutanoate (5.00 g). The mixture was cooled under an ice-bath. Then, pyridine (5.00 g) was added over 15 minutes. After stirring for 1 hour at room temperature, the resulting mixture was cooled under the ice-bath. A solution of 2-chlorobenzoyl chloride (4.98 g) in tetrahydrofuran (30 mL) was added over 15 minutes. The mixture was stirred for 1 hour at room temperature. The reaction was quenched by adding 1N hydrochloric acid (65 mL). The mixture was filtered, and the solvent was evaporated off. The residue was extracted with ethyl acetate (150 mL). The extract was washed with water (100 mL), saturated sodium bicarbonate (100 mL), and brine, dried over magnesium sulfate, and evaporated to give tert-butyl 2-(3-chlorobenzoyl)-3-oxobutanoate as an yellow oil (8.82 g).

1. temperatureThe mixture was cooled under an ice-bath
2. stirringThe mixture was stirred for 1 hour at room temperature
3. customThe reaction was quenched
4. additionby adding 1N hydrochloric acid (65 mL)
5. filtrationThe mixture was filtered
6. customthe solvent was evaporated off
7. extractionThe residue was extracted with ethyl acetate (150 mL)
8. washThe extract was washed with water (100 mL), saturated sodium bicarbonate (100 mL), and brine
9. dry with materialdried over magnesium sulfate
10. customevaporated

ORD record

ord-c350e61a47ee4276be102719cc6a0e20

Source dataset

uspto-grants-2008_01

DOI

10.6084/m9.figshare.5104873.v1

Patent number

US07317009B2