3-Phenyl-7-(v-triazol-2-yl)-coumarins

• US 4,141,900 A
• Filed: 03/16/1977
• Issued: 02/27/1979
• Est. Priority Date: 03/26/1976
• Status: Expired due to Term

• Current Assignee: CIBA Specialty Chemicals
• Original Assignee: Ciba-Geigy Corporation (Novartis Ag)
• Inventors: Schlapfer, deceased, Hans
• Primary Examiner(s): Rollins, Alton D.
• Application Number:
  US05/777,995
• Time in Patent Office: 713 Days
• Field of Search: 260/308 A, 260/247.2 B, 260/293.58
• US Class Current: 548/256
• CPC Class Codes: D06L 4/614 in aqueous solvents

Abstract

Novel 3-phenyl-7-(v-triazol-2-yl)-coumarins of the formula ##STR1## wherein R represents hydrogen, unsubstituted or substituted alkyl, alkenyl, alkanyol, aroyl, aralkyl, alkoxycarbonyl, carbamoyl or v-epoxyalkyl, the rings A, B and C being optionally substituted with further non-chromophoric substituents, processes for their preparation as well as a process for optically brightening organic material on using said compounds are disclosed.

Claims

1. 3-Phenyl-7-(v-triazol-2-yl)-coumarins of the formula ##STR17## wherein R" represents an alkyl group of 1 to 4 carbon atoms, an allyl or benzyl group,

R₁ '"'"' represents a hydrogen or chlorine atom, and

R₃ '"'"' represents a hydrogen atom, a chlorine atom, an alkyl or alkoxy group of 1 to 4 carbon atoms.

2. 3-Phenyl-7-(v-triazol-2-yl)-coumarins according to claim 1 of the formula ##STR18## wherein R'"'"'" represents an alkyl group of 1 to 4 carbon atoms or a benzyl group, and

R₁ '"'"' represents a hydrogen or chlorine atom.