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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 2205170Generated: October 31, 2026

Benzocaine → HCID 178468668, compound

https://huagongshe.com/reaction/2205170

Reaction equation

Participants

RoleNameHCIDCharge
ReactantBenzocaineHCID 2337—
ReactantMethanesulfonic AcidHCID 6395—
ReactantHCID 86718153HCID 86718153—
SolventDiphenyl EtherHCID 7583—
ProductHCID 178468668HCID 17846866862.2%

Reaction Conditions

Temperature90 °C

Reaction Steps

Methyl 2,3-bis(4-methoxyphenyl)-3-oxopropanoate (1.3 g, 4.14 mmol, 1.00 equiv), ethyl 4-aminobenzoate (680 mg, 4.12 mmol, 1.00 equiv), CH3SO3H (118 mg, 1.23 mmol, 0.30 equiv), and Ph2O (20 mL) were placed in a 100-mL round-bottom flask stirred for 1 h at 90° C., then at 180° C. for 3 h, in an oil bath. Upon cooling, 100 ml of petroleum ether was added. The resulting solid was collected by filtration and dried in a vacuum oven, affording 1.1 g (crude) of ethyl 4-hydroxy-2,3-bis(4-methoxyphenyl)quinoline-6-carboxylate as a brown solid.

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS09370522B2
Source datasetuspto-grants-2016_06
ORD IDord-5b5e6e573ced438d9df1f5bd98157081
Source noteuspto-grants-2016_06