Back
HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 2300718Generated: October 31, 2026

Benzimidazole → HCID 15549639, compound

https://huagongshe.com/reaction/2300718

Reaction equation

Participants

RoleNameHCIDCharge
ReactantBenzimidazoleHCID 5798—
ReactantSodium hydrideHCID 24758—
Reactant4-Chloro-2-methylthiopyrimidineHCID 97113—
SolventDimethylformamideHCID 6228—
ProductHCID 15549639HCID 1554963938.6%

Reaction Conditions

Temperature100 °C

Reaction Steps

A mixture of NaH (0.548 mg, 22.8 mmol), benzimidazole (0.52 g, 21.3 mmol) and 4-chloro-2-methylthiopyrimidine (2.48 mL, 21.3 mmol) in 30 mL of DMF was heated to 100° C. for 30 min. The reaction was quenched with H2O and extracted with EtOAc. The combined organic fractions were washed with brine, dried over MgSO4, filtered and concentrated. The residue was purified by chromatography (silica, 0-10% MeOH:CH2Cl2) to give 1.99 g of the title compound. 1H NMR (500 MHz, CDCl3): δ 8.69 (s, 1H); 8.64 (d, J=5.5 Hz, 1H); 8.22 (dd, J=1.4, 7.3 Hz); 7.89 (dd, J=1.6, 7.3 Hz); 7.44 (m, 2H); 7.23 (d, J=5.7 Hz, 1H); 2.69 (s, 3H).

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS06498165B1
Source datasetuspto-grants-2002_12
ORD IDord-e0287e5690fe444d95d5d9e45ba8fbdf
Source noteuspto-grants-2002_12