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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 1400637Generated: October 31, 2026

3-Bromofuran → HCID 59455126, compound

https://huagongshe.com/reaction/1400637

Reaction equation

Participants

RoleNameHCIDCharge
Reactant3-BromofuranHCID 89164—
ReactantTetrabutylammonium FluorideHCID 2724141—
Reactant5-Ethynyl-2,8-dimethyl-2,3,4,5-tetrahydro-1H-pyrido[4,3-b]indoleHCID 59455000—
CatalystHCID 178418476HCID 178418476—
SolventWaterHCID 962—
ProductHCID 59455126HCID 594551265.1%

Reaction Conditions

Temperature80 °C

Reaction Steps

A mixture of 5-ethynyl-2,8-dimethyl-2,3,4,5-tetrahydro-1H-pyrido[4,3-b]indole (180 mg, 0.81 mmol), 3-bromofuran (100 mg, 0.68 mmol), dichlorobis(triphenylphosphine)palladium (II) (14 mg, 0.02 mmol) and TBAF.3H2O (642 mg, 2.0 mmol) was heated at 80° C. for 5 min by microwave. After completion of reaction (monitored by TLC), the mixture was poured into water (10 mL) and extracted with EtOAc (3×10 mL). The organic layer was dried over sodium sulfate and concentrated under vacuum to obtain product, which was purified by reverse phase chromatography to obtain 10 mg of 5-furan-3-ylethynyl-2,8-dimethyl-2,3,4,5-tetrahydro-1H-pyrido[4,3-b]indole. 1H NMR (CDCl3, freebase) δ (ppm): 7.70 (s, 1H), 7.50-7.4 (m, 2H), 7.20 (s, 1H), 7.10 (d, 1H), 6.55 (s, 1H), 3.68 (s, 2H), 3.0-2.90 (m, 4H), 2.60 (s, 3H), 2.40 (s, 3H).

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS08906925B2
Source datasetuspto-grants-2014_12
ORD IDord-12a9593d83c94351918945dfa5e529cc
Source noteuspto-grants-2014_12