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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 406268Generated: October 26, 2026

1,2-Bis(4-methylphenyl)-1,2-ethanedione → 7-Chloro-2,3-dip-tolylpyrido[2,3-b]pyrazine

https://huagongshe.com/reaction/406268

Reaction equation

Participants

RoleNameHCIDCharge
Reactant1,2-Bis(4-methylphenyl)-1,2-ethanedioneHCID 76996—
Reactant5-Chloropyridine-2,3-diamineHCID 1268254—
Reactant(E)-7-(2,3-Diphenyl-7,8-dihydropyrido[3,2-b]pyrazin-5(6H)-yl)hept-3-enoic acidHCID 66665765—
SolventAcetic AcidHCID 176—
Product7-Chloro-2,3-dip-tolylpyrido[2,3-b]pyrazineHCID 66666349—

Reaction Steps

The title compound was prepared from 1,2-dip-tolylethane-1,2-dione and 5-chloro-pyridine-2,3-diamine analogously to 2,3-dip-tolylpyrido[2,3-b]pyrazine (Intermediate E step 1). Acetic acid is not used in this reaction.

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS08754085B2
Source datasetuspto-grants-2014_06
ORD IDord-4f258bbbcb2b41c89c6374e8bbe07a28
Source noteuspto-grants-2014_06