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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 440737Generated: October 27, 2026

Water → 5H-Imidazo(2,1-c)(1,4)benzodiazepine, 10,11-dihydro-

https://huagongshe.com/reaction/440737

Reaction equation

Participants

RoleNameHCIDCharge
ReactantWaterHCID 962—
ReactantSodium HydroxideHCID 14798—
Reactant5,10-Dihydroimidazo[2,1-c][1,4]benzodiazepin-4-oneHCID 468255—
ReactantAluminium lithium hydrideHCID 21226445—
SolventTetrahydrofuranHCID 8028—
Product5H-Imidazo(2,1-c)(1,4)benzodiazepine, 10,11-dihydro-HCID 3060399—

Reaction Conditions

Temperature0 °C

Reaction Steps

To a suspension of 4 mmol of lithium aluminum hydride in 20 ml of anhydrous tetrahydrofuran is added a 1 mmol solution of 10,11-dihydro-11-oxo-5H-imidazo[2,1-c][1,4]benzodiazepine and the mixture is refluxed for 24 hours and cooled at 0° C. To the mixture is added dropwise 0.12 ml of water and 6 ml of 1N sodium hydroxide. The mixture is extracted with ethyl acetate and the solvent removed to give the desired product as a solid. Recrystallization from methylene chloride-hexane gives crystals, m.p. 164°-170° C.

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS05521173
Source datasetuspto-grants-1996_05
ORD IDord-57cb8cd3b1c94a209cda5962e86f8284
Source noteuspto-grants-1996_05