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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 35178Generated: October 25, 2026

Sodium Hydroxide → 3,4-Dihydro-2H-1,4-benzoxazine

https://huagongshe.com/reaction/35178

Reaction equation

Participants

RoleNameHCIDCharge
ReactantSodium HydroxideHCID 14798—
Reactant2H-1,4-benzoxazin-3(4H)-oneHCID 72757—
ReactantDiboronHCID 6328200—
SolventTetrahydrofuranHCID 8028—
Product3,4-Dihydro-2H-1,4-benzoxazineHCID 585096—

Reaction Steps

3,4-Dihydro-3-oxo-1,4(2H)-benzoxazine was refluxed for several hours in one equivalent of diborane in tetrahydrofuran. Excess sodium hydroxide solution was added, the product was extracted with ether and the solvent was evaporated to give the title compound as an oil.

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS04766118
Source datasetuspto-grants-1988_08
ORD IDord-4e559cf6b812488bb588a627a636cd16
Source noteuspto-grants-1988_08