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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 1392292Generated: October 26, 2026

Thionyl Chloride → 1-Naphthylurea

https://huagongshe.com/reaction/1392292

Reaction equation

Participants

RoleNameHCIDCharge
ReactantThionyl ChlorideHCID 24386—
ReactantEthyl 3-{3-t-butyl-5-[3-(4-chlorophenyl)ureido]-1h-pyrazol-1-yl}benzoateHCID 21867337—
SolventMethyl ChlorideHCID 6327—
Product1-NaphthylureaHCID 81387451.1%

Reaction Steps

A solution of Example C (1.66 g, 4.0 mmol) and SOCl2 (0.60 mL, 8.0 mmol) in CH3Cl (100 mL) was refluxed for 3 h and concentrated in vacuo to yield 1-{3-tert-butyl-1-[3-chloromethyl)phenyl]-1H-pyrazol-5-yl}-3-(naphthalen-1-yl)urea (1.68 g 97%) was obtained as white powder. 1H NMR (DMSO-d6): δ 9.26 (s, 1 H), 9.15 (s, 1 H), 8.42-7.41 (m, 11 H), 6.40 (s, 1 H), 4.85 (s, 2 H), 1.28 (s, 9 H). MS (ESI) m/z: 433 (M+H+).

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS07342037B2
Source datasetuspto-grants-2008_03
ORD IDord-7f2062e0d26b48f1bf65d9d2d33909d3
Source noteuspto-grants-2008_03