Gale, Douglas J. published the artcileFiber-reactive polymethine dyes containing the N-2,3-dibromopropionyl and N-chlorodifluoropyrimidyl groups, COA of Formula: C3H3Br2ClO, the publication is Textile Research Journal (1978), 48(9), 548-50, database is CAplus.
Treatment of 5-amino-1,3,3-trimethyl-2-methyleneindoline [6872-05-5] with 2,3-dibromopropionyl chloride [18791-02-1] or 5-chloro-2,4,6-trifluoropyrimidine [697-83-6] gives I (R = CH2BrCHBrCO) [68699-06-9] and I (R = A) [68699-07-0], which are treated with 4-(dimethylamino)benzaldehyde [100-10-7], 4-[(2-chloroethyl)methylamino]benzaldehyde [94-31-5], or 1-methyl-2-phenylindole-3-carboxaldehyde [1757-72-8] to give 6 polymethine dyes. The lightfastness of the dyes on wool was significantly greater than that of the corresponding N-chloroacetyl and parent nonreactive dyes. Attempts to prepare the corresponding 2,4-dichloro-s-triazinyl derivative were unsuccessful.
Textile Research Journal published new progress about 18791-02-1. 18791-02-1 belongs to chlorides-buliding-blocks, auxiliary class Aliphatic Chain, name is 2,3-Dibromopropionylchloride, and the molecular formula is C3H3Br2ClO, COA of Formula: C3H3Br2ClO.
Referemce:
https://en.wikipedia.org/wiki/Chloride,
Chlorides – an overview | ScienceDirect Topics