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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 7581Generated: October 27, 2026

Phosphorus oxychloride → 2-Cyclopentyl-5-ethyl-7-(1-methylcyclohexyl)imidazo[5,1-f][1,2,4]triazin-4(3H)-one

https://huagongshe.com/reaction/7581

Reaction equation

Participants

RoleNameHCIDCharge
ReactantPhosphorus oxychlorideHCID 24813—
ReactantN-[1-(3-Cyclopentyl-5-oxo-4,5-dihydro-1,2,4-triazin-6-yl)propyl]-1-methylcyclohexanecarboxamideHCID 135752650—
Product2-Cyclopentyl-5-ethyl-7-(1-methylcyclohexyl)imidazo[5,1-f][1,2,4]triazin-4(3H)-oneHCID 135752707—

Reaction Steps

In analogy to the procedure for Example 1, 200 mg (0.58 mmol) crude N-[1-(3-cyclopentyl-5-oxo-4,5-dihydro-1,2,4-triazin-6-yl)propyl]-1-methylcyclohexanecarboxamide, 165 mg (1.1 mmol) phosphoric trichloride are stirred at reflux for 4 hours, proportionate amounts of the solvents are used. The product is purified by chromatography (preparative HPLC).

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS07087605B2
Source datasetuspto-grants-2006_08
ORD IDord-f58a7fb0b87a4cadabcb3f41487c1aa6
Source noteuspto-grants-2006_08