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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 896158Generated: October 29, 2026

Water → HCID 21877972, compound

https://huagongshe.com/reaction/896158

Reaction equation

Participants

RoleNameHCIDCharge
ReactantWaterHCID 962—
ReactantDichloromethaneHCID 6344—
ReactantAmmonium ChlorideHCID 25517—
ReactantHCID 21877911HCID 21877911—
CatalystIronHCID 23925—
SolventEthanolHCID 702—
ProductHCID 21877972HCID 2187797292%

Reaction Conditions

Temperature90 °C

Reaction Steps

2-(2-Fluoro-4-nitrophenyl)-4H-[1,3,4]thiadiazin-5-one (Step 4, 0.964 g, 0.00378 mol) is heated in ethanol (20 ml) until dissolved. Water (10 ml) and ammonium chloride (2.02 g, 0.0378 mol) are added and the mixture heated to 90° C. Iron powder (0.84 g, 0.0151 mol) is added portionwise and the mixture stirred and heated for 30 minutes. The reaction is cooled and dichloromethane (100 ml) added. The mixture is filtered and the organic layer separated, washed with saline, dried (MgSO4) and evaporated to give the title compound as a yellow solid (0.78 g, 92%), [M+H]+=226.

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS06919329B2
Source datasetuspto-grants-2005_07
ORD IDord-f44ffd67e1f74581b0f02167d63e2bca
Source noteuspto-grants-2005_07