Back
HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 1910606Generated: November 3, 2026

Water → HCID 58707330, compound

https://huagongshe.com/reaction/1910606

Reaction equation

Participants

RoleNameHCIDCharge
ReactantWaterHCID 962—
ReactantDiisopropylethylamineHCID 81531—
Reactant2,4-Difluoro-1-(methylsulfonyl)benzeneHCID 2758336—
Reactant6-Chloro-3,4-dihydro-2H-1-benzopyran-4-amine--hydrogen chloride (1/1)HCID 52988847—
SolventDimethylformamideHCID 6228—
ProductHCID 58707330HCID 5870733016.1%

Reaction Steps

A solution of 6-chlorochroman-4-amine hydrochloride (551.0 mg, 2.50 mmol), 2,4-difluoro-1-(methylsulfonyl)benzene (496.0 mg, 2.50 mmol) and diisopropylethylamine (1.29 g, 10.0 mmol) in N,N-dimethylformamide (10 mL) was stirred at 110° C. for 16 h. The reaction was cooled to room temperature, poured over water and extracted with diethyl ether. The solvent was concentrated in vacuo and the residue was purified by silica chromatography (20% ethyl acetate in hexanes) to yield 143.0 mg (16%) of the desired product: 1H NMR (400 MHz, CDCl3) δ 7.82 (dd, 1H), 7.19 (m, 2H), 6.83 (d, 1H), 6.57 (m, 2H), 4.60 (m, 1H), 4.30 (m, 1H), 4.28 (m, 1H), 3.01 (s, 3H), 2.19 (m, 2H).

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS08604021B2
Source datasetuspto-grants-2013_12
ORD IDord-7011fcd3292c4e048968c3997cb3e403
Source noteuspto-grants-2013_12