Pyrazole substituted 2-(2') benzimidazolyl-furans

Details Pyrazole substituted 2-(2') benzimidazolyl-furans Pyrazole substituted 2-(2') benzimidazolyl-furans

C - Chemistry, Metallurgy

09

B

260/305.5

C09B 57/00 (2006.01) C07D 521/00 (2006.01)

Patent

CA 1067084

PYRAZOLE SUBSTITUTED 2-(2') BENZIMIDAZOLYL-FURANS Abstract of the Disclosure Disclosed are optical brightening agents, such agents being 2-(2')-benzimidazoyl-furans substituted in the 5-position of the furan ring by a 1-aryl-pyrazolyl-3, -4 or -5 radical, by a pyrazolyl-1 radical or by a 2-aryl-v-tri- azolyl-4 radical, such compounds being in free base, acid addition or quaternary ammonium salt form. These agents have the structural formula Image in which the 1-phenyl-pyrazolyl ring is bound at its 3- or 5- position to the furan ring.

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