2,5-Dimethoxytetrahydrofuran → HCID 70532416, compound

Participants

Reaction Steps

To a suspension of 1.0 g of 8-amino-6,7-dihydro-9-fluoro-5-methyl-1-oxo-1H,5H-benzo[ij]quinolizine-2-carboxylic acid in 20 ml of warm galcial acetic acid was added 1.0 g 2,5-dimethoxytetrahydrofuran. The mixture was heated at reflux for 30 minutes. The product which precipitated was separated by filtration and washed with water to provide yellowish-white crystals of 6,7-dihydro-9-fluoro-5-methyl-1-oxo-8-(1-pyrryl)-1H,5H-benzo[ij]quinolizine-2-carboxylic acid hydrate, m.p. 300° C. Analysis: Calculated for C18H15FN2O3.1/3H2O: %C, 65.0; %H, 4.7; %N, 8.4; Found: %C, 64.8; %H, 4.5; %N, 8.4. The structural assignment was confirmed by infrared and nuclear magnetic resonance spectral analyses.

Provenance & Evidence