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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 1290639Generated: October 29, 2026

Carbon Dioxide → [2-(1-Methoxy-1-methylethyl)-6-fluorobenzoxazol-7-yl]carboxylic acid

https://huagongshe.com/reaction/1290639

Reaction equation

Participants

RoleNameHCIDCharge
ReactantCarbon DioxideHCID 280—
ReactantHCID 18916394HCID 18916394—
ReactantButyllithiumHCID 178418339—
SolventTetrahydrofuranHCID 8028—
Product[2-(1-Methoxy-1-methylethyl)-6-fluorobenzoxazol-7-yl]carboxylic acidHCID 18916446—

Reaction Steps

An additional 2.1 grams of [2-(1-methoxy-1-methylethyl)-6-fluorobenzoxazol-7-yl]carboxylic acid of was prepared in the manner of Step B, Example 1, with 4.2 grams (17 mmole) of N-(3-chloro-4-fluorophenyl)-2-methoxy-2-methylpropionamide, 120 mL of tetrahydrofuran, 16 mL (40 mmole) of 2.5M n-butyllithium in hexanes, and 3.0 grams of solid carbon dioxide as reagents. The NMR spectrum was consistent with the proposed structure.

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS05753595
Source datasetuspto-grants-1998_05
ORD IDord-c065258c2bce43d6b73bc47d42764ba3
Source noteuspto-grants-1998_05