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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 1497678Generated: October 27, 2026

1-Biphenyl-2-ylmethyl-4-oxo-1,4-dihydro-[1,5]naphthyridine-3-carboxylic acid → 5-Biphenyl-2-ylmethyl-8-oxo-5,8-dihydro-pyrido[2,3-b]pyrazine-7-carboxylic acid

https://huagongshe.com/reaction/1497678

Reaction equation

Participants

RoleNameHCIDCharge
Reactant1-Biphenyl-2-ylmethyl-4-oxo-1,4-dihydro-[1,5]naphthyridine-3-carboxylic acidHCID 76902481—
Reactant5-Biphenyl-2-ylmethyl-8-oxo-5,8-dihydro-pyrido[2,3-b]pyrazine-7-carboxylic acid ethyl esterHCID 76902864—
Product5-Biphenyl-2-ylmethyl-8-oxo-5,8-dihydro-pyrido[2,3-b]pyrazine-7-carboxylic acidHCID 7690248354%

Reaction Steps

5-Biphenyl-2-ylmethyl-8-oxo-5,8-dihydro-pyrido[2,3-b]pyrazine-7-carboxylic acid (15) (300 mg, 54%) was synthesized as a light yellow solid from 600 mg of 5-biphenyl-2-ylmethyl-8-oxo-5,8-dihydro-pyrido[2,3-b]pyrazine-7-carboxylic acid ethyl ester (14) following the procedure described for 1-biphenyl-2-ylmethyl-4-oxo-1,4-dihydro-[1,5]naphthyridine-3-carboxylic acid (7).

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS09199987B2
Source datasetuspto-grants-2015_12
ORD IDord-4b93e674022e466b8cd3302485608ebe
Source noteuspto-grants-2015_12