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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 601390Generated: October 30, 2026

2-Chlorobenzenesulfonyl chloride → HCID 136358510, compound

https://huagongshe.com/reaction/601390

Reaction equation

Participants

RoleNameHCIDCharge
Reactant2-Chlorobenzenesulfonyl chlorideHCID 76187—
Reactant3-(7-Amino-1,1-dioxido-4H-1,2,4-benzothiadiazin-3-yl)-4-hydroxy-1-(3-methylbutyl)-1,8-naphthyridin-2(1H)-oneHCID 135430710—
SolventPyridineHCID 1049—
ProductHCID 136358510HCID 13635851046.5%

Reaction Conditions

Temperature120 °C

Reaction Steps

To the product of Example 205 (21.5 g, 0.05 mmol) in pyridine (1 mL) was added 2-chlorobenzenesulfonyl chloride (27 mL, 0.2 mmol). The reaction mixture was heated in a microwave reactor at 120° C. for 120 minutes. The reaction was cooled to 25° C. and concentrated under reduced pressure. The residue was triturated with water (1 mL), filtered, and washed with 1:1 hexane:ethyl acetate. The crude product was purified by chromatography on silica gel eluting with 199:1 dichloromethane:methanol to give the title compound (14 mg, 46%). 1H NMR (300 MHz, DMSO-d6) δ 0.96 (d, J=6.25 Hz, 6 H) 1.54 (m, 2 H) 1.67 (m, 1 H) 4.44 (t, J=7.71 Hz, 2 H) 7.57 (m, 7 H) 8.11 (d, J=8.46 Hz, 1 H) 8.52 (dd, J=8.09, 1.84 Hz, 1 H) 8.86 (dd, J=4.78, 1.84 Hz, 1 H) 11.24 (s, 1 H) 13.99 (s, 1 H). MS (ESI−) m/z 600 (M−H)−.

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS07902203B2
Source datasetuspto-grants-2011_03
ORD IDord-1d902c9b762c436a95fe9bee45ad83ae
Source noteuspto-grants-2011_03