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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 509084Generated: October 30, 2026

Sodium Sulfite → HCID 86731462, compound

https://huagongshe.com/reaction/509084

Reaction equation

Participants

RoleNameHCIDCharge
ReactantSodium SulfiteHCID 24437—
ReactantN-bromobutanimideHCID 67184—
ReactantHCID 86731459HCID 86731459—
SolventDichloromethaneHCID 6344—
ProductHCID 86731462HCID 8673146270%

Reaction Conditions

Temperature0 °C

Reaction Steps

To a solution of compound ethyl 7-(4-(tert-butoxycarbonyl)piperazin-1-yl)isoquinoline-3-carboxylate (1.1 g, 2.85 mmol) in DCM (10 mL) was added NBS (508 mg, 2.85 mmol) following by stirring at 0° C. for 1 h. To the reaction mixture was added saturated Na2SO3 (20 ml). The combined organic layers were dried by anhydrous Na2SO4, concentrated in vacuo, and washed by PE to afford ethyl 8-bromo-7-(4-(tert-butoxycarbonyl)piperazin-1-yl)isoquinoline-3-carboxylate as a light yellow solid (900 mg, yield: 70%).

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS09096549B2
Source datasetuspto-grants-2015_08
ORD IDord-49f3a782c9004c0e8bd43fa1d811c31d
Source noteuspto-grants-2015_08