Back
HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 430473Generated: October 31, 2026

2(1H)-Pyrimidinone, tetrahydro-1,3-dimethyl- → 6-[2-Hydroxy-4-(5-fluoro-2-methoxyphenyl)-4-methyl-2-trifluoromethyl-pentylamino]-4-methyl-2,3-benzoxazin-1-one

https://huagongshe.com/reaction/430473

Reaction equation

Participants

RoleNameHCIDCharge
Reactant2(1H)-Pyrimidinone, tetrahydro-1,3-dimethyl-HCID 81646—
Reactant6-amino-4-methyl-2,3-benzoxazin-1-oneHCID 11182936—
Reactant2-[2-(5-Fluoro-2-methoxyphenyl)-2-methylpropyl]-2-trifluoromethyloxiraneHCID 16099239—
SolventTetrahydrofuranHCID 8028—
Product6-[2-Hydroxy-4-(5-fluoro-2-methoxyphenyl)-4-methyl-2-trifluoromethyl-pentylamino]-4-methyl-2,3-benzoxazin-1-oneHCID 15463551—

Reaction Steps

584 mg of 2-[2-(5-fluoro-2-methoxyphenyl)-2-methyl-propyl]-2-trifluoromethyl-oxiran, 282 mg of 6-amino-4-methyl-2,3-benzoxazin-1-one and 1 ml of 1,3-dimethyl-3,4,5,6-tetrahydro-2[1H]-pyrimidinone are heated to 120° C. for 6 hours. After 1 ml of tetrahydrofuran is added, it is chromatographed on silica gel, and the title compound is eluted with hexane/ethyl acetate/tetrahydrofuran (55:40:5), flash point 178-179° C.

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS06323199B1
Source datasetuspto-grants-2001_11
ORD IDord-e2ffd892c314470c93c2f2555b3d26d4
Source noteuspto-grants-2001_11