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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 1181356Generated: November 3, 2026

Triethylamine → 3,3-Difluoro-1-[2-(2-methoxy-4-nitrophenoxy)ethyl]pyrrolidine

https://huagongshe.com/reaction/1181356

Reaction equation

Participants

RoleNameHCIDCharge
ReactantTriethylamineHCID 8471—
Reactant3,3-DifluoropyrrolidineHCID 2782827—
Reactant1-(2-Bromoethoxy)2-methoxy-4-nitrobenzeneHCID 12937254—
SolventDimethylformamideHCID 6228—
SolventEthyl AcetateHCID 8857—
Product3,3-Difluoro-1-[2-(2-methoxy-4-nitrophenoxy)ethyl]pyrrolidineHCID 5898089427.5%

Reaction Conditions

Temperature80 °C

Reaction Steps

3,3-Difluoropyrrolidine (0.4589 g, 2.0859 mmol) and 1-(2-bromoethoxy)-2-methoxy-4-nitrobenzene (0.5757 g, 2.0859 mmol) were combined in DMF (5 mL). Triethylamine (0.6332 g, 6.2577 mmol) was added. The reaction was heated to 80° C. and stirred for 18 h. The reaction was cooled to RT and diluted with EtOAc (50 mL). The organics were washed with water (3×100 mL), dried over MgSO4, filtered and concentrated. The residue was purified by chromatatron (1:1 Hex:EtOAc) to give 0.173 g (0.5728 mmol, 27%) of the product as a light yellow oil. 1H NMR (CDCl3) δ 7.90 (d, 1H, 9 Hz), 7.75 (s, 1H), 6.89 (d, 1H, J=9 Hz), 4.21 (t, 2H, J=5.6 Hz), 3.94 (s, 3H), 3.07 (t, 2H, J=13.3 Hz), 2.99 (t, 2H, J=5.7 Hz), 2.89 (t, 2H, J=7.1 Hz), 2.28 (m, 2H).

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS07285557B2
Source datasetuspto-grants-2007_10
ORD IDord-3618868d739042d9a0f576c9277cc79b
Source noteuspto-grants-2007_10