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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 374085Generated: October 30, 2026

Ethyl Bromide → 4-Chloro-2,8-diethyl-6,7-dihydropyrimido[5,4-b][1,4]oxazin-7-one

https://huagongshe.com/reaction/374085

Reaction equation

Participants

RoleNameHCIDCharge
ReactantEthyl BromideHCID 6332—
Reactant4-chloro-6,7-dihydro 2-ethyl-8H-pyrimido[5,4-b][1,4]oxazin-7-oneHCID 19809377—
Product4-Chloro-2,8-diethyl-6,7-dihydropyrimido[5,4-b][1,4]oxazin-7-oneHCID 19909626—

Reaction Steps

Using the procedure of Example 80, except that 1-bromoethane was used instead of methyl iodide, 4-chloro-6,7-dihydro-2-ethyl-8H-pyrimido [5,4-b][1,4]oxazin-7-one was alkylated providing 4-chloro-2,8-diethyl-6,7dihydropyrimido [5,4-b][1,4]oxazin-7-one.

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS05166343
Source datasetuspto-grants-1992_11
ORD IDord-d645385d52324a6b9a5b692e9908a934
Source noteuspto-grants-1992_11