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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 844171Generated: October 31, 2026

Water → HCID 16731819, compound

https://huagongshe.com/reaction/844171

Reaction equation

Participants

RoleNameHCIDCharge
ReactantWaterHCID 962—
Reactant1-MethylpiperazineHCID 53167—
ReactantHCID 16731660HCID 16731660—
SolventDimethylformamideHCID 6228—
ProductHCID 16731819HCID 1673181964.6%

Reaction Conditions

Temperature0 °C

Reaction Steps

To a solution of N-(4-chlorophenyl)-2-[((4-(chloromethyl)-3-chlorothiophen-2-yl)carbonyl)amino]-3-methoxy-5-chlorobenzamide (1.0 g, 2.1 mmol) in DMF (40 mL) at 0° C. was added 1-methylpiperazine (1.2 mL, 1.1 g, 11 mmol), and the mixture stirred for 0.5 hours at 0° C., then warmed to ambient temperature. After 7 hours the reaction mixture was poured into water (150 mL) and the resulting solid collected by filtration, washed with water (50 mL) and acetonitrile (10 mL). Purification by flash chromatography on silica gel afforded 0.77 g (64% yield) of N-(4-chlorophenyl)-2-[((4-((4-methylpiperazin-1-yl)methyl)-3-chlorothiophen-2-yl)carbonyl)amino]-3-methoxy-5-chlorobenzamide, as a white foam: NMR (DMSO-d6/TFA) 10.4 (s,1), 9.4 (s, 1), 7.2-8.1 (m, 7), 4.4 (s, 2), 3.8 (s, 3), 3.0-3.8 (br m, 8), 2.8 (s, 3), ppm

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS06380221B1
Source datasetuspto-grants-2002_04
ORD IDord-747dcfed36754080bb78656d9eb83c22
Source noteuspto-grants-2002_04