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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 742374Generated: October 30, 2026

Potassium Carbonate → HCID 19426025, compound

https://huagongshe.com/reaction/742374

Reaction equation

Participants

RoleNameHCIDCharge
ReactantPotassium CarbonateHCID 11430—
ReactantBenzene, 1-bromo-3-iodo-HCID 11561—
ReactantHCID 19425983HCID 19425983—
CatalystCopperHCID 23978—
SolventN-methyl-2-pyrrolidoneHCID 13387—
ProductHCID 19426025HCID 19426025—

Reaction Steps

A mixture of 6,8-dihydro-7-methyl-2H-pyrrolo[3,4-e]benzimidazole (0.25 g), K2CO3 (0.26 g), 3-bromo-1-iodobenzene (0.8 g) and Copper powder (15-20 mg) was heated in N-methyl-2-pyrrolidone (5 ml) at 180° C. for 3 hours. The mixture was then partitioned between EtOAc and water. The organic phase was dried over Na2SO4 and evaporated. The oily residue was purified on SiO2 with EtOAc as the eluent. 1H--NMR (500MHz,CDCl3) ppm: 2.8(s,3H), 4.2(s,2H), 4.45(s,2H), 7.2-7.7(m,6H aromatic) 8.1 (s, 1H imidazole).

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS05554632
Source datasetuspto-grants-1996_09
ORD IDord-267d67f3fb11461691b499c5348624f0
Source noteuspto-grants-1996_09