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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 374087Generated: October 30, 2026

Hydrazine hydrate (1:1) → 8-Ethyl-4-hydrazinyl-7,8-dihydro-2-methyl-6H-pyrimido[5,4-b][1,4]oxazine

https://huagongshe.com/reaction/374087

Reaction equation

Participants

RoleNameHCIDCharge
ReactantHydrazine hydrate (1:1)HCID 24654—
ReactantHCID 19909617HCID 19909617—
Product8-Ethyl-4-hydrazinyl-7,8-dihydro-2-methyl-6H-pyrimido[5,4-b][1,4]oxazineHCID 19809381—

Reaction Steps

Using the method of Example 87, 4-chloro-6,7-dihydro-8-ethyl-2-methylpyrimido [5,4-b][1,4]oxazine, from Example 102, was reacted with hydrazine hydrate to provide 6,7-dihydro-8-ethyl-4-hydrazino-2-methylpyrimido[5,4-b][1,4]oxazine.

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS05166343
Source datasetuspto-grants-1992_11
ORD IDord-71676bdf14914f899b7ffcc91758f526
Source noteuspto-grants-1992_11