2-ACETYL-3-CHLOROPYRIDINE

In a mixture of 54 g of 3-chloropyridine-2-carbonitrile and 300 mL of THF, 500 g of 1 M methylmagnesium bromide THF solution was added dropwise under ice cooling. The reaction mixture was stirred for 2 hours under ice cooling. The reaction mixture obtained was added to 2N hydrochloric acid under ice cooling, and the mixture was stirred for 30 minutes. A 1N sodium hydroxide aqueous solution was added to the mixture, and the mixture was adjusted to pH 8, followed by extraction with ethyl acetate. After washing the organic layer with saturated brine, the organic layer was dried with anhydrous sodium sulfate. The organic layer was concentrated under reduced pressure to obtain 58 g of an intermediate (12-1)Preparation Example 2(1) (0639) To 3-chloropyridine-2-carbonitrile 54 g, and THF 300 mL, 1M THF solution of methyl magnesium bromide 500 mg was added dropwise under ice-cooling. The obtained reaction mixtures were stirred under ice-cooling for 2 hours. The obtained reaction mixtures were added to 2N hydrochloric acid under ice-cooling, and stirred for 30 minutes. To the mixtures was added 1N sodium hydroxide solution to adjust to pH 8, and the mixtures were extracted with ethyl acetate. The obtained organic layer was washed with brine and dried over anhydrous sodium sulfate. The organic layer was concentrated to give the Intermediate compound (4-1) 58 g. Preparation Example 12(1) To a mixture of 3-chloropyridine-2-carbonitrile 54 g and THF 300 mL was added dropwise 1M methylmagnesium bromide solution in THF 500 g under ice-cooling. The reaction mixtures were stirred under ice-cooling for 2 hours. To 2N hydrochloric acid was added the resulting reaction mixtures under ice-cooling, and the mixtures were stirred for 30 minutes. The mixtures were made pH 8 with a 1N aqueous sodium hydroxide solution, and then the mixtures were extracted with ethyl acetate. The organic layers were washed with saturated brine, and then the organic layers were dried over anhydrous sodium sulfate. The organic layers were concentrated under reduced pressure to give an intermediate compound (12-1) 58 g.In a mixture of 54 g of 3-chloropyridine-2-carbonitrile and 300 mL of THF, 500 g of 1 M methylmagnesium bromide THF solution was added dropwise under ice cooling. The reaction mixture was stirred for 2 hours under ice cooling. The reaction mixture obtained was added to 2N hydrochloric acid under ice cooling, and the mixture was stirred for 30 minutes. A 1N sodium hydroxide aqueous solution was added to the mixture, and the mixture was adjusted to pH 8, followed by extraction with ethyl acetate. After washing the organic layer with saturated brine, the organic layer was dried with anhydrous sodium sulfate. The organic layer was concentrated under reduced pressure to obtain 58 g of an intermediate (12-1)Preparation Example 2(1) (0639) To 3-chloropyridine-2-carbonitrile 54 g, and THF 300 mL, 1M THF solution of methyl magnesium bromide 500 mg was added dropwise under ice-cooling. The obtained reaction mixtures were stirred under ice-cooling for 2 hours. The obtained reaction mixtures were added to 2N hydrochloric acid under ice-cooling, and stirred for 30 minutes. To the mixtures was added 1N sodium hydroxide solution to adjust to pH 8, and the mixtures were extracted with ethyl acetate. The obtained organic layer was washed with brine and dried over anhydrous sodium sulfate. The organic layer was concentrated to give the Intermediate compound (4-1) 58 g. Preparation Example 12(1) To a mixture of 3-chloropyridine-2-carbonitrile 54 g and THF 300 mL was added dropwise 1M methylmagnesium bromide solution in THF 500 g under ice-cooling. The reaction mixtures were stirred under ice-cooling for 2 hours. To 2N hydrochloric acid was added the resulting reaction mixtures under ice-cooling, and the mixtures were stirred for 30 minutes. The mixtures were made pH 8 with a 1N aqueous sodium hydroxide solution, and then the mixtures were extracted with ethyl acetate. The organic layers were washed with saturated brine, and then the organic layers were dried over anhydrous sodium sulfate. The organic layers were concentrated under reduced pressure to give an intermediate compound (12-1) 58 g.To a mixture of 3-chloropyridine-2-carbonitrile (54 g) and THF (300 mL) was added dropwise a 1 M solution of methylmagnesium bromide in THF (500 mL) under ice-cooling. The reaction mixture was stirred under ice-cooling for 2 hours. The resulting reaction mixture was added to 2N hydrochloric acid under ice-cooling, and the mixture was stirred for 30 minutes. To the mixture was added a 1N aqueous solution of sodium hydroxide so that the pH of the solution was set to be 8, and then the mixture was extracted with ethyl acetate. The resulting organic layers were washed with saturated brine, and then the organic layers were dried over anhydrous sodium sulfate. The organic layers were concentrated under reduced pressure to give the Intermediate compound 7 represented by the following formula (58 g). Intermediate compound 7:

Molecular Weight:155.58
XLogP3:1.5
Hydrogen Bond Acceptor Count:2
Rotatable Bond Count:1
Exact Mass:155.0137915
Monoisotopic Mass:155.0137915
Topological Polar Surface Area:30
Heavy Atom Count:10
Complexity:138
Covalently-Bonded Unit Count:1
Compound Is Canonicalized:Yes