Back
HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 7568Generated: October 27, 2026

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

https://huagongshe.com/reaction/7568

Reaction equation

Participants

RoleNameHCIDCharge
ReactantPhosphorus oxychlorideHCID 24813—
ReactantN-[1-(3-cyclopropyl-5-oxo-4,5-dihydro-1,2,4-triazin-6-yl)propyl]cyclopentanecarboxamideHCID 135752607—
Product7-Cyclopentyl-2-cyclopropyl-5-ethylimidazo[5,1-f][1,2,4]triazin-4(3H)-oneHCID 135752594—

Reaction Steps

In analogy to the procedure for Example 1, 370 mg (1.28 mmol) crude N-[1-(3-cyclopropyl-5-oxo-4,5-dihydro-1,2,4-triazin-6-yl)propyl]cyclopentanecarboxamide, 200 mg (1.28 mmol) phosphoric trichloride are stirred at reflux for 3 hours, proportionate amounts of the solvents are used.

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS07087605B2
Source datasetuspto-grants-2006_08
ORD IDord-644fc957d9a84e2ba138f5e61c9a83ef
Source noteuspto-grants-2006_08