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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 2426048Generated: November 1, 2026

Water → HCID 58707330, compound

https://huagongshe.com/reaction/2426048

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 numberUS07968538B2
Source datasetuspto-grants-2011_06
ORD IDord-50f4b89d4e02466f9370a377bcb9f75b
Source noteuspto-grants-2011_06