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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 1521620Generated: October 31, 2026

Hydrazinecarboxaldehyde → HCID 21543699, compound

https://huagongshe.com/reaction/1521620

Reaction equation

Participants

RoleNameHCIDCharge
ReactantHydrazinecarboxaldehydeHCID 12229—
Reactant6-Bromo-3,4-dihydroquinoline-2(1H)-thioneHCID 57370990—
Solvent1-ButanolHCID 263—
SolventWaterHCID 962—
ProductHCID 21543699HCID 21543699—

Reaction Conditions

Temperature140 °C

Reaction Steps

To a stirred solution of 6-bromo-3,4-dihydroquinoline-2(1H)-thione (74-4; 0.17 g, 0.0007 mol) in n-butanol (2 mL) was added formic hydrazide (0.105 g, 0.0017 mol) at room temperature. Reaction mass was allowed to stir at 140° C. for 1 h under microwave irradiation conditions. The reaction mixture was cooled to room temperature, diluted with water (10 mL) and extracted with ethyl acetate (2×10 mL). The combined organic layer was washed with saturated aqueous sodium chloride solution, dried over sodium sulphate and concentrated under vacuum to afford title compound. MS (M+3): 252.2.

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS09073929B2
Source datasetuspto-grants-2015_07
ORD IDord-0761eab62e0443078756c87e328a7434
Source noteuspto-grants-2015_07