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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 451062Generated: October 31, 2026

N-Methylethylamine → 2-chloro-N-ethyl-N-methyl-8-phenyl-7,8-dihydro-5H-pyrano[4,3-d]pyrimidin-4-amine

https://huagongshe.com/reaction/451062

Reaction equation

Participants

RoleNameHCIDCharge
ReactantN-MethylethylamineHCID 12219—
Reactant2,4-Dichloro-8-phenyl-7,8-dihydro-5H-pyrano[4,3-D]pyrimidineHCID 58075529—
SolventMethanolHCID 887—
Product2-chloro-N-ethyl-N-methyl-8-phenyl-7,8-dihydro-5H-pyrano[4,3-d]pyrimidin-4-amineHCID 58075627100.2%

Reaction Steps

A solution of 2,4-dichloro-8-phenyl-7,8-dihydro-5H-pyrano[4,3-d]pyrimidine (135 mg, 0.480 mmol) and excess N-methylethanamine (284 mg, 4.80 mmol) in MeOH (2 mL) was stirred at rt for 1 h. The solvent was removed in vacuum to afford 2-chloro-N-ethyl-N-methyl-8-phenyl-7,8-dihydro-5H-pyrano[4,3-d]pyrimidin-4-amine (146 mg, 0.481 mmol, 100% yield). LC-MS (M+H)+=304.2.

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS08486952B2
Source datasetuspto-grants-2013_07
ORD IDord-2da4ef1bc32145a9ada5157d6b5efe2e
Source noteuspto-grants-2013_07