ES368760A1 - Procedure for the preparation of 3-phenyl-7- (4'cloro-pirazolil- (1 ')) - cumarine series aclarers. (Machine-translation by Google Translate, not legally binding)
- Google Patents
Procedure for the preparation of 3-phenyl-7- (4'cloro-pirazolil- (1 ')) - cumarine series aclarers. (Machine-translation by Google Translate, not legally binding)
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Novartis AG
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JR Geigy AG
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Publication of ES368760A1publicationCriticalpatent/ES368760A1/en
Procedure for the preparation of lighteners of the 3-phenyl-7- [4'-chloro-pyrazolyl- (1')] - coumarin series enhanced in the color tone characterized in that 3-phenyl-7- [pyrazolyl- (1')] - coumarins with free 4-position on the pyrazolyl radical are chlorinated to form a compound of formula I, **(See formula)** in which R1 and R2 each, hydrogen, alkyl with 1-4 carbon atoms, an optionally substituted aromatic radical, halogen up to atomic number 35 or the trifluoromethyl group and R3 signifies an optionally substituted phenyl group. (Machine-translation by Google Translate, not legally binding)
ES368760A1968-06-261969-06-25Procedure for the preparation of 3-phenyl-7- (4'cloro-pirazolil- (1 ')) - cumarine series aclarers. (Machine-translation by Google Translate, not legally binding)
ExpiredES368760A1
(en)
Procedure for the preparation of 3-phenyl-7- (4'cloro-pirazolil- (1 ')) - cumarine series aclarers. (Machine-translation by Google Translate, not legally binding)
Procedure for the preparation of 3-phenyl-7- (4'cloro-pirazolil- (1 ')) - cumarine series aclarers. (Machine-translation by Google Translate, not legally binding)
Procedure for obtaining new 1,2,3-triazolic fluorescent derivatives of 3-phenyl-cumarine (Machine-translation by Google Translate, not legally binding)
Procedure for the preparation of 1,3-diazaciclopentenos (2) substituted in the position 2. (Machine-translation by Google Translate, not legally binding)