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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 1371360Generated: October 25, 2026

Methylamine → Imidazo(1,2-a)pyrazin-8-amine, 3-bromo-N-methyl-

https://huagongshe.com/reaction/1371360

Reaction equation

Participants

RoleNameHCIDCharge
ReactantMethylamineHCID 6329—
ReactantTetrahydrofuranHCID 8028—
Reactant3,5-Dibromoimidazo[1,2-a]pyrazineHCID 14207592—
SolventWaterHCID 962—
SolventDichloromethaneHCID 6344—
ProductImidazo(1,2-a)pyrazin-8-amine, 3-bromo-N-methyl-HCID 308836050%

Reaction Conditions

Temperature70 °C

Reaction Steps

3,5-Dibromo-imidazo[1,2-a]pyrazine (D) (2.0 g, 7 mol) was added to 2M methylamine in THF (tetrahydrofuran) (100 ml, 30 eq.). The mixture was heated at 70° C. in sealed tube for 3hr. The mixture was then cooled to rt, diluted with DCM (200 ml) and water (100 ml). The organic layer was washed with brine, dried and concentrated. The residue was purified on a silica gel column to give (3-bromo-imidazo[1,2-a]pyrazin-8-yl)-methyl-amine (yield 50%).

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS07157460B2
Source datasetuspto-grants-2007_01
ORD IDord-2d8bcf774efd44b68696e3b515e9726a
Source noteuspto-grants-2007_01