Sodium Chloride → HCID 70635991, compound

Participants

Reaction Conditions

Reaction Steps

9.2 parts of 4-bromo-N-ethylnaphtholactam and 8 parts of N-β-chloroethyl-2,2,4-trimethyltetrahydroquinoline are stirred with 20 parts of phosphorus oxychloride and 6 parts of phosphorus pentoxide are then introduced whilst stirring. The mixture is gradually heated to 95° C and is then kept at this temperature for 2 hours. It is then stirred into 400 parts of water, 20 parts of sodium chloride are added and the dyestuff is separated from the solution after stirring for several hours. It is recrystallised from 500 parts of water with addition of 1 part of active charcoal. After precipitation with sodium chloride, it crystallises as the salt of the formula ##STR9## This dyestuff gives clear blue dyeings, distinguished by very good fastness properties, on materials of polyacrylonitrile, acid-modified polyesters and acid-modified polyamides. The same dyestuff is also obtained if instead of N-β-chloroethyl-2,2,4-trimethyltetrahydroquinoline the equivalent amount of N-β-hydroxyethyl-2,2,4-trimethyltetrahydroquinoline is employed.

Provenance & Evidence