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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 251967Generated: October 30, 2026

2-Amino-3,5-dibromobenzoic acid → 6,8-dibromo-2-[4,5-dichloro-1-(3-chloro-2-pyridinyl)-1H-pyrrol-2-yl]-4H-3,1-benzoxazine-4-one

https://huagongshe.com/reaction/251967

Reaction equation

Participants

RoleNameHCIDCharge
Reactant2-Amino-3,5-dibromobenzoic acidHCID 219491—
Reactant2-Amino-5-chloro-3-methylbenzoic acidHCID 11644044—
Reactant4-bromo-1-(3-chloro-2-pyridinyl)-1H-pyrrole-2-carboxylic acidHCID 66854487—
Reactant4,5-dichloro-1-(3-chloro-2-pyridinyl)-1H-pyrrole-2-carboxylic acidHCID 66854530—
Product6,8-dibromo-2-[4,5-dichloro-1-(3-chloro-2-pyridinyl)-1H-pyrrol-2-yl]-4H-3,1-benzoxazine-4-oneHCID 66853890—

Reaction Steps

According to the same manner as that of Reference Preparation Example 71-(5), 4,5-dichloro-1-(3-chloro-2-pyridinyl)-1H-pyrrole-2-carboxylic acid and 2-amino-3,5-dibromobenzoic acid were used in place of 4-bromo-1-(3-chloro-2-pyridinyl)-1H-pyrrole-2-carboxylic acid and 2-amino-5-chloro-3-methylbenzoic acid respectively to obtain 6,8-dibromo-2-[4,5-dichloro-1-(3-chloro-2-pyridinyl)-1H-pyrrol-2-yl]-4H-3,1-benzoxazine-4-one of the formula:

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS07867949B2
Source datasetuspto-grants-2011_01
ORD IDord-a9f876640ffa49dfa34cdb0a78bcc723
Source noteuspto-grants-2011_01