Reaktion #93770

Reaktionsgleichung

product

Ethyl 8-methoxycarbonyl-4-oxo-10-propyl-6-trichloroacetamido-4H-pyrano[3,2-g)quinoline-2-carboxylate

ammonia

→

title compound

Ethyl 6-amino-8-methoxycarbonyl-4-oxo-10-propyl-4H-pyrano [3,2-g]-quinoline-2-carboxylate

Lösungsmittel

sulphuric acid

Reaktionsbedingungen

Aufarbeitung

1. 1
   Filtrationthe precipitate filtered

Vorschrift

The product of step (a) (1.0 g) was dissolved in concentrated sulphuric acid (1 ml) and stirred vigorously for 0.5 hours. The deep rep solution was then poured into iced aqueous ammonia solution (100 ml), and the precipitate filtered to give the title compound, 0.5 g, as an orange powder, mp 265°-270° C. (decomposes).

Quelle