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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 56893Generated: October 29, 2026

Benzocaine → Ethyl 4-({2-[4-(5-chloro-2-cyanophenyl)-5-methoxy-2-oxopyridin-1(2H)-yl]-3-(4-methyltetrahydro-2H-pyran-4-yl)propanoyl}amino)benzoate

https://huagongshe.com/reaction/56893

Reaction equation

Participants

RoleNameHCIDCharge
ReactantBenzocaineHCID 2337—
ReactantDiisopropylcarbodiimideHCID 12734—
ReactantAcetonitrile--water (1/1)HCID 18373917—
ReactantHCID 117622903HCID 117622903—
SolventDimethylformamideHCID 6228—
ProductEthyl 4-({2-[4-(5-chloro-2-cyanophenyl)-5-methoxy-2-oxopyridin-1(2H)-yl]-3-(4-methyltetrahydro-2H-pyran-4-yl)propanoyl}amino)benzoateHCID 117622713—

Reaction Steps

206 mg (478 μmol) of 2-[4-(5-chloro-2-cyanophenyl)-5-methoxy-2-oxopyridin-1(2H)-yl]-3-(4-methyltetrahydro-2H-pyran-4-yl)propanoic acid (racemate), 79 mg (0.48 mmol) of ethyl 4-aminobenzoate, 6.8 mg (48 μmol) of Oxima and 74 μl (0.48 mmol) of DIC in 4.8 ml of dimethylformamide were reacted according to General Method 5B. Preparative HPLC (acetonitrile/water gradient) gave the title compound. Yield: 70 mg (purity 95%, 24% of theory)

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS09434690B2
Source datasetuspto-grants-2016_09
ORD IDord-120d6f3070c24ce88b038c819275a1af
Source noteuspto-grants-2016_09