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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 963502Generated: October 30, 2026

Pyridine → HCID 19081257, compound

https://huagongshe.com/reaction/963502

Reaction equation

Participants

RoleNameHCIDCharge
ReactantPyridineHCID 1049—
Reactant1H-Indazol-6-amineHCID 81423—
Reactant4-Nitrophenyl chloroformateHCID 82129—
SolventTetrahydrofuranHCID 8028—
ProductHCID 19081257HCID 1908125759.6%

Reaction Conditions

Temperature0 °C

Reaction Steps

A mixture of 6-amino-1H-indazole (2.00 g) and pyridine (2.67 ml) in tetrahydrofuran was stirred at 0° C. and then p-nitrophenyl chloroformate (3.18 g) was added and stirred at the same temperature for 2 hours. The reaction mixture was evaporated and partitioned between ethyl acetate and water. The organic layer was washed with water and brine, dried over sodium sulfate, and evaporated in vacuo. The pale yellow powder was washed with isopropyl ether and diethyl ether, and vacuumed to afford 4-nitrophenyl N-(lH-indazol-6-yl)carbamate (2.67 g).

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS05763437
Source datasetuspto-grants-1998_06
ORD IDord-4f06a370f52243bfbc9037d4bcff16bf
Source noteuspto-grants-1998_06