成人免费xx,国产又黄又湿又刺激不卡网站,成人性视频app菠萝网站,色天天天天

Welcome to chemicalbook!
Chinese English Japanese Germany Korea
400-158-6606
Try our best to find the right business for you.
Do not miss inquiry messages Please log in to view all inquiry messages.

Welcome back!

ChemicalBook CAS DataBase List 4-Acetyl-piperidine-1-carboxylic acid tert-butyl ester
206989-61-9

4-Acetyl-piperidine-1-carboxylic acid tert-butyl ester synthesis

3synthesis methods
Tert-butyl-4-(methoxy(methyl)carbamoyl)piperidine-1-carboxylate (2.29 g, 8.32 mmol) was dissolved in 30 ml of tetrahydrofuran (THF), and the resulting solution was cooled to -78 °C. To the solution, methylmagnesium bromide (3.0 M) (7.73 ml, 10.82 mmol) was slowly added, and the solution was stirred at 0 °C for 1 hr. After the reaction was completed with a 2 N hydrochloric acid aqueous solution, 6 N sodium hydroxide solution was added to adjust the pH to 10. Then the solution was extracted with dichloromethane. The organic layer was treated with magnesium sulfate (MgSO4) and filtered, and the solution was concentrated. The resulting residue was isolated and purified by silica gel column chromatography (dichloromethane/methanol = 10/1) to give 4-Acetyl-piperidine-1-carboxylic acid tert-butyl ester (6.36 g, 94.0 percent).
139290-70-3 Synthesis
1-Boc-4-[methoxy(methyl)carbamoyl]piperidine

139290-70-3
187 suppliers
$6.00/100mg

-

4-Acetyl-piperidine-1-carboxylic acid tert-butyl ester Related Search: