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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 2066532Generated: October 31, 2026

Isopropanol → Pyrazino[2,1-c][1,4]oxazine, octahydro-, (9aR)- (9CI)

https://huagongshe.com/reaction/2066532

Reaction equation

Participants

RoleNameHCIDCharge
ReactantIsopropanolHCID 3776—
ReactantSodium SulfateHCID 24436—
Reactant(9aR)-Hexahydropyrazino[2,1-c][1,4]oxazin-4(3H)-oneHCID 16124470—
ReactantAluminium lithium hydrideHCID 21226445—
Solvent1,4-DioxaneHCID 31275—
ProductPyrazino[2,1-c][1,4]oxazine, octahydro-, (9aR)- (9CI)HCID 1864903373%

Reaction Steps

To a solution of (R)-hexahydro-pyrazino[2,1-c][1,4]oxazin-4-one (60 mg, 0.39 mmol) in dioxane (5 mL) was added LiAlH4 (1.5 mL, 1M solution in THF). The resulting mixture was heated at 80° C. for 2.5 h before the addition of iPrOH (0.5 mL) followed by a saturated aqueous solution of Na2SO4 (3 mL). Further Na2SO4 was added and the resulting mixture filtered through celite, washing with EtOAc. The resulting residue was purified by NH2 column to give the title compound as an oil (40 mg, 73%).

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS08293735B2
Source datasetuspto-grants-2012_10
ORD IDord-0de7cf8cbd134b419f5ede457cf48a8c
Source noteuspto-grants-2012_10