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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 1502167Generated: October 31, 2026

Ethyl orthoformate → 5-nitro-2-(1H-tetrazol-1-yl)pyridine

https://huagongshe.com/reaction/1502167

Reaction equation

Participants

RoleNameHCIDCharge
ReactantEthyl orthoformateHCID 31214—
ReactantAcetic acid, 2,2,2-trifluoro-, trimethylsilyl esterHCID 67863—
Reactant2-Amino-5-nitropyridineHCID 77888—
ReactantAzidotrimethylsilaneHCID 78378—
SolventAcetic AcidHCID 176—
Product5-nitro-2-(1H-tetrazol-1-yl)pyridineHCID 66927291—

Reaction Steps

To 5-nitropyridin-2-amine (1.00 g, 7.19 mmol) in AcOH was added trimethylsilyl trifluoroacetate (2.111 mL, 12.22 mmol). After stirring for 5 min, triethyl orthoformate (2.155 ml, 12.94 mmol) was added. Azidotrimethylsilane (1.513 mL, 11.50 mmol) was added after stirring for another 5 min. The reaction mixture was stirred at RT overnight, and was concentrated to give the crude solid. The solid was washed with DCM, and dried under vacuum to give title compound. LC/MS: [(M+1)]+=193.19, [(M+1-28)]+=165.19

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS09206199B2
Source datasetuspto-grants-2015_12
ORD IDord-16ee0d2ec7524c22989cf557e60fff67
Source noteuspto-grants-2015_12