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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 601143Generated: October 30, 2026

Phosgene → HCID 22496346, compound

https://huagongshe.com/reaction/601143

Reaction equation

Participants

RoleNameHCIDCharge
ReactantPhosgeneHCID 6371—
ReactantPotassium HydroxideHCID 14797—
ReactantMethyl 3-amino-5-phenylthiophene-2-carboxylateHCID 700562—
SolventWaterHCID 962—
ProductHCID 22496346HCID 2249634666.7%

Reaction Conditions

Temperature0 °C

Reaction Steps

Methyl-3-amino-5-phenylthiophene-2-carboxylate (0.25 g, 1.07 mmol) in water (6 mL) was reacted with potassium hydroxide (0.12 g, 2.14 mmol) at 90° C. for 24 hours. The reaction was cooled to 0° C. and phosgene (1.9M in toluene, 0.70 mL, 1.40 mmol) was added dropwise. After stirring at room temperature for 1 hour, the resulting solid was collected by filtration, washed with excess water and dried to give the title compound as a tan solid (0.175 g, 65%).

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS07902203B2
Source datasetuspto-grants-2011_03
ORD IDord-35f0f8ff129d473cafb4fe9af321f690
Source noteuspto-grants-2011_03