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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 1260578Generated: November 4, 2026

1-Methoxy-2-methylbut-3-yn-2-ol → 2-Amino-1-ethyl-7-(3-hydroxy-4-methoxy-3-methylbut-1-yn-1-yl)-N-methyl-4-oxo-1,4-dihydro-1,8-naphthyridine-3-carboxamide

https://huagongshe.com/reaction/1260578

Reaction equation

Participants

RoleNameHCIDCharge
Reactant1-Methoxy-2-methylbut-3-yn-2-olHCID 21706426—
Reactant2-Amino-7-chloro-1-ethyl-N-methyl-4-oxo-1,4-dihydro-1,8-naphthyridine-3-carboxamideHCID 86642336—
CatalystCopper(1+) iodide; Copper(I) iodide; Cuprous iodide; Cuprous iodide (CuI)HCID 24350—
CatalystDichlorobis(triphenylphosphine)palladiumHCID 6102075—
Solventtriethylamine N,N-dimethylformamideHCID 22056947—
Product2-Amino-1-ethyl-7-(3-hydroxy-4-methoxy-3-methylbut-1-yn-1-yl)-N-methyl-4-oxo-1,4-dihydro-1,8-naphthyridine-3-carboxamideHCID 67081200—

Reaction Steps

A suspension of 3 g (10.69 mmol) of 2-amino-7-chloro-1-ethyl-N-methyl-4-oxo-1,4-dihydro[1,8]naphthyridine-3-carboxamide in 20 ml of a DMF/Et3N mixture (V/V; 1/1) is placed in an 80 ml microwave tube. This suspension is sparged with argon for 10 minutes and then 1.83 g of (±)-1-methoxy-2-methyl-3-butyn-2-ol (16.03 mmol), 0.081 g of CuI (0.43 mmol) and 0.375 g of bis(triphenylphosphine) palladium(II)dichloride (0.53 mmol) are successively added.

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS08470847B2
Source datasetuspto-grants-2013_06
ORD IDord-f21d74d8329745f7907cf980f1fe6473
Source noteuspto-grants-2013_06