Ethyl bromoacetate → (6-Methoxy-1-oxo-1,2,3,4-tetrahydronaphthalen-2-yl)acetic acid

n-Butyl lithium (3.27 g, 51.04 mmol) was added to a solution of di-isopropyl amine (6.88 g, 68.11 mmol) in THF (50 mL) at −60° C., and the mixture was stirred for 0.5 h. 6-methoxy-1-tetralone (6 g, 34.09 mmol) in THF (10 mL) was slowly added to the reaction mixture, the mixture was stirred for 45 min and ethyl bromoacetate (11.9 g, 71.25 mmol) was added. The reaction mixture was then stirred at room temperature for 16 h and quenched with saturated NH4Cl solution. The reaction mixture was extracted with EtOAc (X2), combined organic layers were washed with brine, dried over anhydrous Na2SO4, filtered and concentration to give 5.3 g of the title compound.

1. stirringthe mixture was stirred for 45 min
2. stirringThe reaction mixture was then stirred at room temperature for 16 h
3. customquenched with saturated NH4Cl solution
4. extractionThe reaction mixture was extracted with EtOAc (X2)
5. washwere washed with brine
6. dry with materialdried over anhydrous Na2SO4
7. filtrationfiltered
8. concentrationconcentration

ORDレコード

ord-457fd39f34d84c7ca7fc11c00e481078

出典データセット

uspto-grants-2016_01

DOI

10.6084/m9.figshare.5104873.v1

特許番号

US09242929B2