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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 1741864Generated: October 25, 2026

Ethyl isocyanate → 4-Ethyl-2-propyl semicarbazide

https://huagongshe.com/reaction/1741864

Reaction equation

Participants

RoleNameHCIDCharge
ReactantEthyl isocyanateHCID 8022—
ReactantSodium CarbonateHCID 10340—
ReactantHydrazine, propyl-, ethanedioate (1:1)HCID 96079—
SolventWaterHCID 962—
SolventTetrahydrofuranHCID 8028—
Product4-Ethyl-2-propyl semicarbazideHCID 19010929—

Reaction Steps

To a stirred slurry of 3.35 g (20 mmol) of n-propylhydrazine oxalate and 2.24 g (20 mmol) of sodium carbonate in 50 mL of water and 10 mL of tetrahydrofuran (THF) was added 1.7 mL (21.5 mmol) of ethyl isocyanate. The mixture was stirred at room temperature for 16 h and evaporated in vacuo to leave crude 4-ethyl-2-propyl semicarbazide as a white solid.

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS05334726
Source datasetuspto-grants-1994_08
ORD IDord-5f57321e62a6428397dbd99332e3be1a
Source noteuspto-grants-1994_08