Diethyl Ether → HCID 86738893, compound

Participants

Reaction Steps

A solution of 3 ml of triethylamine in 100 ml of dimethylsulfoxide was added to 4 g of 1-(2-carboxyethyl)-4-(4-anilino-1,3-butadien-1-yl)-quinolinium bromide and 3 g of 3-(2-methylnaphtho[1,2-d]thiazolin-1-yl)-propane-1-sulfonate and the resulting mixture was subjected to reaction at 100° C. for 2 hours. After completion of the reaction, the reaction product was cooled, and diethyl ether was added, after which the resulting precipitate was collected by filtration to obtain a crude dye. It was boiled together with ethanol to obtain crystals, and the crystals were recrystallized from methanol containing a small quantity of triethylamine to obtain 0.9 g of the objective compound (melting point 219° C.) which was dark green. Its maximum absorption wavelength as measured in triethylamine-containing methanol was 760 nm.

Provenance & Evidence