Back
HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 29016Generated: October 29, 2026

Lithium Hydroxide → HCID 68801865, compound

https://huagongshe.com/reaction/29016

Reaction equation

Participants

RoleNameHCIDCharge
ReactantLithium HydroxideHCID 3939—
Reactant4-(4-cyclopropylethynyl-2-oxo-4-trifluoromethyl-1,4-dihydro-2H-benzo[d][1,3]oxazin-6-yloxy)-butyric Acid Ethyl EsterHCID 68806476—
SolventMethanolHCID 887—
SolventWaterHCID 962—
ProductHCID 68801865HCID 6880186583%

Reaction Steps

To a suspension of 45 mg (0.11 mmol) of 10 in 4 mL of 50% methanol in water was added 60 mg (2.5 mmol) of lithium hydroxide. The reaction mixture was allowed to stir at room temperature for 1 hour and concentrated under reduced pressure. To the residue 20 mL of water were added followed by 1 mL of 1N HCl. The reaction mixture was extracted with 4×30 mL of ethyl acetate. The organic layers were combined, dried (Na2SO4), and concentrated under reduced pressure. The residue was purified by preparative thin layer chromatography (silica gel, 2 mm thickness, E. Merck) using 5% methanol in dichloromethane to give 35 mg (0.091 mmol, 83%) of 11.

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS07420043B2
Source datasetuspto-grants-2008_09
ORD IDord-7420152c9db24ace8dcf6976799a9b2b
Source noteuspto-grants-2008_09