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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 227618Generated: October 30, 2026

Formamide → 3-(4-Nitrophenyl)isothiazolo[5,4-d]pyrimidin-4-amine

https://huagongshe.com/reaction/227618

Reaction equation

Participants

RoleNameHCIDCharge
ReactantFormamideHCID 713—
ReactantWaterHCID 962—
Reactant5-Amino-3-(4-nitrophenyl)isothiazole-4-carbonitrileHCID 69055185—
Product3-(4-Nitrophenyl)isothiazolo[5,4-d]pyrimidin-4-amineHCID 4441474284%

Reaction Steps

A mixture of Example 96E (200 mg) in formamide (5 mL) in a capped vial was heated to 210° C. in a Smith microwave oven at 300W for 25 minutes, poured into water, and filtered. The filter cake was dried to provide 2.02 g (84% yield) of the desired product. MS(ESI(+)) m/e 274 (M+H)+.

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS07560552B2
Source datasetuspto-grants-2009_07
ORD IDord-cb325f8a8a724487b8bc4591735c1aec
Source noteuspto-grants-2009_07