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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 1801597Generated: November 2, 2026

Benzimidazole → HCID 59803191, compound

https://huagongshe.com/reaction/1801597

Reaction equation

Participants

RoleNameHCIDCharge
ReactantBenzimidazoleHCID 5798—
ReactantPotassium CarbonateHCID 11430—
ReactantHCID 59803176HCID 59803176—
CatalystCopper(1+) iodide; Copper(I) iodide; Cuprous iodide; Cuprous iodide (CuI)HCID 24350—
SolventN-methyl-2-pyrrolidoneHCID 13387—
ProductHCID 59803191HCID 5980319119.3%

Reaction Conditions

Temperature150 °C

Reaction Steps

To a mixture of 1H-benzo[d]imidazole (0.106 g, 0.90 mmol) and (R)—N-(3-bromo-4-chlorobenzyl)-1-phenylethanamine 75 (0.247 g, 0.76 mmol) was added potassium carbonate (0.141 g, 1.0 mmol), copper(I) iodide (0.023 g, 0.12 mmol), and NMP (0.8 mL). The reaction mixture was degassed and heated to 150° C. for 3 d, diluted with EtOAc, filtered, and concentrated in vacuo. Purification by flash column chromatography on silica gel (eluted with 40% to 100% EtOAc in hexanes) gave (1R)—N-(3-(1H-benzo[d]imidazol-1-yl)-4-chlorobenzyl)-1-phenylethanamine 76 (0.053 g, 19% yield) as a colorless oil. 1H NMR (400 MHz, CDCl3) δ 1.38 (d, J=6.7 Hz, 3H), 3.69 (s, 2H), 3.82 (q, J=6.7 Hz, 1H), 7.20-7.43 (m, 11H), 7.55 (d, J=8.2 Hz, 1H), 7.79 (d, J=7.2 Hz, 1H), 8.04 (s, 1H). Mass spectrum: calculated for C22H20ClN3 361.1. found 362.2 (M++1).

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS08349831B2
Source datasetuspto-grants-2013_01
ORD IDord-aa9c42ae833f4e3d9e6d551d869c0b6b
Source noteuspto-grants-2013_01