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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 1078594Generated: October 27, 2026

1-(2-Ethoxyphenyl)piperazine → 3-{2-[4-(2-ethoxyphenyl)-1-piperazinyl]ethyl}-5,7-dimethoxy-4-methyl-2H-1-benzopyran-2-one

https://huagongshe.com/reaction/1078594

Reaction equation

Participants

RoleNameHCIDCharge
Reactant1-(2-Ethoxyphenyl)piperazineHCID 83357—
Reactant3-(2-chloroethyl)-5,7-dimethoxy-4-methyl-2H-1-benzopyran-2-oneHCID 19428161—
Product3-{2-[4-(2-ethoxyphenyl)-1-piperazinyl]ethyl}-5,7-dimethoxy-4-methyl-2H-1-benzopyran-2-oneHCID 1942813731%

Reaction Steps

Process B: starting materials: 3-(2-chloroethyl)-5,7-dimethoxy-4-methyl-2H-1-benzopyran-2-one (Example 39) and 1-(2-ethoxyphenyl)piperazine; yield 31% of crude product.

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS05550129
Source datasetuspto-grants-1996_08
ORD IDord-2886c4eb72fa42749201d06ff52c2639
Source noteuspto-grants-1996_08