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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 341188Generated: November 2, 2026

Ethyl isocyanate → HCID 59320850, compound

https://huagongshe.com/reaction/341188

Reaction equation

Participants

RoleNameHCIDCharge
ReactantEthyl isocyanateHCID 8022—
Reactant3-Amino-5-bromopyridineHCID 817681—
Solvent1,2-DimethoxyethaneHCID 8071—
ProductHCID 59320850HCID 5932085090.1%

Reaction Conditions

Temperature60 °C

Reaction Steps

A mixture of EtNCO (1.6 ml, 20 mmol) and 5-bromo-pyridin-3-ylamine (1.73 g, 10 mmol) in DME (10 ml) was stirred and heated at 60° C. under N2. After 2 hours another aliquot of EtNCO (1.6 ml, 20 mmol) was added and the mixture was stirred at 60° C. for a further 16 hours. After cooling to RT the mixture was evaporated. The residue was triturated with EtOAc. The solid was collected by filtration and dried under vacuum to give the title compound (2.2 g) as a colourless solid. 1H NMR (400 MHz, DMSO-d6): 8.85 (1H, s), 8.43 (1H, d), 8.27 (1H, t), 8.21 (1H, d), 6.39 (1H, t), 3.19-3.05 (2H, m), 1.06 (3H, t).

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS08895745B2
Source datasetuspto-grants-2014_11
ORD IDord-573c7199ad6d44c5afd326351f1ed38e
Source noteuspto-grants-2014_11