Sodium Carbonate → N-(8-benzyl-8-aza-bicyclo[3.2.1]octan-3-yl)isobutyramide

To a solution of amine 100 (2.70 g, 12.48 mmol) in CH2Cl2 (13 mL), was added 1M Na2CO3 (19 mL, 18.72 mmol, 1.5 equiv). The mixture was cooled to 0° C. and isobutyryl chloride (1.6 mL, 14.98 mmol, 1.2 equiv) was added dropwise with stirring over 30 min. The resulting mixture was warmed to room temperature and allowed to stir for 2 h after which time the layers were separated and the aqueous layer was extracted with CH2Cl2 (3×25 mL). The combined organic layers were washed with 1N NaOH (2×20 mL), then with H2O (2×20 mL), then dried over MgSO4, filtered, and concentrated in vacuo to yield amide 101 (3.3 g, 93%).

1. temperatureThe resulting mixture was warmed to room temperature
2. stirringto stir for 2 h after which time the layers
3. customwere separated
4. extractionthe aqueous layer was extracted with CH2Cl2 (3×25 mL)
5. washThe combined organic layers were washed with 1N NaOH (2×20 mL)
6. dry with materialwith H2O (2×20 mL), then dried over MgSO4
7. filtrationfiltered
8. concentrationconcentrated in vacuo

ORD-Eintrag

ord-de0087e0cebb400ba66c5bb5a4c0e4a5

Quelldatensatz

uspto-grants-2011_04

DOI

10.6084/m9.figshare.5104873.v1

Patentnummer

US07932235B2