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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 601375Generated: October 29, 2026

Methanesulfonyl chloride → HCID 135441196, compound

https://huagongshe.com/reaction/601375

Reaction equation

Participants

RoleNameHCIDCharge
ReactantMethanesulfonyl chlorideHCID 31297—
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—
SolventEthyl AcetateHCID 8857—
ProductHCID 135441196HCID 13544119635%

Reaction Conditions

Temperature100 °C

Reaction Steps

To the product of Example 205 (0.020 g, 0.047 mmol) in pyridine (0.2 mL) was added methanesulfonyl chloride (0.0064 g, 0.0043 mL, 0.056 mmol). The reaction mixture was heated in a microwave reactor at 100° C. for 38 minutes. The reaction was diluted with ethyl acetate (40 mL), washed with 1 N hydrochloric acid, water, and brine. The organic layer was dried over magnesium sulfate and filtered. The filtrate was concentrated under reduced pressure to give a yellow solid, which was purified by chromatography on silica gel eluting with 99:1 dichloromethane:methanol to give the title compound (8.3 mg, 35%). 1H NMR (300 MHz, DMSO-d6) δ 0.98 (d, J=6.62 Hz, 6 H) 1.57 (m, 2 H) 1.70 (m, 1 H) 3.10 (s, 3 H) 4.49 (m, 2 H) 7.50 (dd, J=7.91, 4.60 Hz, 1 H) 7.58 (dd, J=8.82, 2.57 Hz, 1 H) 7.64 (d, J=2.21 Hz, 1 H) 7.75 (d, J=8.82 Hz, 1 H) 8.56 (dd, J=8.09, 1.84 Hz, 1 H) 8.89 (dd, J=4.60, 1.65 Hz, 1 H) 10.29 (s, 1 H) 14.17 (s, 1 H). MS (ESI−) m/z 504 (M−H)−.

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS07902203B2
Source datasetuspto-grants-2011_03
ORD IDord-5bc17caad06f44f390a97d33665bf543
Source noteuspto-grants-2011_03