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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 1289534Generated: October 31, 2026

Dimethylformamide → HCID 18921711, compound

https://huagongshe.com/reaction/1289534

Reaction equation

Participants

RoleNameHCIDCharge
ReactantDimethylformamideHCID 6228—
ReactantTriethylamineHCID 8471—
Reactant1-Methyl-1,2,3,4-tetrahydroisoquinolineHCID 92214—
Reactant2,4-Dichloro-5,6,7,8-tetrahydroquinazolineHCID 12602864—
SolventEthyl AcetateHCID 8857—
ProductHCID 18921711HCID 1892171162.5%

Reaction Conditions

Temperature80 °C

Reaction Steps

A mixture solution of 1-methyl-1,2,3,4-tetrahydroisoquinoline(2.6 g, 17.4 mmol), triethylamine(2.8 mL), N,N-dimethylformamide (20 ml) and 2,4-dichloro-5,6,7,8-tetrahydroquinazoline(3.2 g, 15.8 mmol) prepared in the above Step 2 were stirred at 80° C. for 3 hours and cooled. The reaction mixture was diluted with ethyl acetate and washed with water. The organic layer was separated, dried over anhydrous sodium sulfate, and concentrated. The residue was purified with silica gel column chromatography to give 3.1 g of the titled compound. (Yield: 62.5%)

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS05750531
Source datasetuspto-grants-1998_05
ORD IDord-4c5f0970699f4d0a9294a378b078ea4e
Source noteuspto-grants-1998_05