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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 1851442Generated: November 2, 2026

Citric Acid → HCID 57901704, compound

https://huagongshe.com/reaction/1851442

Reaction equation

Participants

RoleNameHCIDCharge
ReactantCitric AcidHCID 311—
Reactant2-Amino-2-methyl-1-propanolHCID 11807—
Reactant1-HydroxybenzotriazoleHCID 75771—
Reactant1,3-Propanediamine, N'-(ethylcarbonimidoyl)-N,N-dimethyl-, monohydrochlorideHCID 2723939—
ReactantHCID 57476168HCID 57476168—
SolventWaterHCID 962—
SolventDimethylformamideHCID 6228—
ProductHCID 57901704HCID 5790170474%

Reaction Conditions

Temperature60 °C

Reaction Steps

To a mixture of 7-[(2-thienylsulfonyl)amino]-1H-indole-2-carboxylic acid (1.00 g), 2-amino-2-methylpropan-1-ol (0.55 g), 1H-1,2,3-benzotriazol-1-ol (0.50 g) and N,N-dimethylformamide (15 mL) was added N-[3-(dimethylamino)propyl]-N′-ethylcarbodiimide hydrochloride (0.71 g) at 0° C., and the mixture was stirred at 60° C. overnight. Water was added to the reaction mixture and the mixture was acidified with 10% aqueous citric acid solution. The resulting crystals were filtrated, washed with water, and dried to give the title compound (0.89 g, yield 74%) as colorless crystals. melting point>217° C. (decomposition).

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS08957070B2
Source datasetuspto-grants-2015_02
ORD IDord-9ead23b54cba4c3497a214cca1e550db
Source noteuspto-grants-2015_02