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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 1910190Generated: October 25, 2026

Sodium Bicarbonate → 2-[(5-phenylethynyl-pyridine-3-carbonyl)-amino]-1H-benzoimidazole-4-carboxylic acid (1H-imidazol-2-yl)-amide

https://huagongshe.com/reaction/1910190

Reaction equation

Participants

RoleNameHCIDCharge
ReactantSodium BicarbonateHCID 516892—
ReactantMethanaminium, N-((1H-benzotriazol-1-yloxy)(dimethylamino)methylene)-N-methyl-, hexafluorophosphate(1-) (1:1)HCID 2733084—
Reactant5-(2-Phenyleth-1-Ynyl)Nicotinic AcidHCID 2779236—
ReactantHCID 178508178HCID 178508178—
SolventWaterHCID 962—
SolventDimethylformamideHCID 6228—
SolventDiisopropylethylamineHCID 81531—
Product2-[(5-phenylethynyl-pyridine-3-carbonyl)-amino]-1H-benzoimidazole-4-carboxylic acid (1H-imidazol-2-yl)-amideHCID 5872447344.7%

Reaction Steps

0.1 g (0.46 mmol) of 5-Phenylethynyl-nicotinic acid, 0.19 g (0.5 mmol) of HBTU in a mixture of 2.0 ml of DMF and 0.30 mL of DIEA was reacted with 0.1 g (0.40 mmol) of 2-Amino-3H-benzoimidazole-4-carboxylic acid (1H-imidazol-2-yl)-amide (Intermediate B) as described in general procedure A. The reaction mixture was cooled to r.t. 5.0 mL of water and 5.0 mL of saturated NaHCO3 was added, and the resulting solid was filtered. The solid was washed with water, ether and dried to provide 0.08 g (43%) of 2-[(5-phenylethynyl-pyridine-3-carbonyl)-amino]-1H-benzoimidazole-4-carboxylic acid (1H-imidazol-2-yl)-amide. LCMS: 448 (M+1)+.

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS08598353B2
Source datasetuspto-grants-2013_12
ORD IDord-42c3214b33fc47258c392042c2feec07
Source noteuspto-grants-2013_12