Alkylation process and novel hydroxyphenylbenztriazoles

Details Alkylation process and novel hydroxyphenylbenztriazoles Alkylation process and novel hydroxyphenylbenztriazoles

A - Human Necessities

61

K

A61K 31/4192 (2006.01) A61K 8/49 (2006.01) A61P 17/16 (2006.01) A61Q 17/04 (2006.01) C07D 249/20 (2006.01)

Patent

CA 2337586

The invention relates to a process for the manufacture of compounds of the general formula I (see formula I) wherein R1 is alkyl; R2, R3, R4 R5 and R6 are, independently, hydrogen, alkyl or alkenyl; X is hydrogen, halogen, alkyl or alkoxy; and the dotted bond is an optional bond; to novel light screening compositions containing certain of the compounds of formula I; and to certain novel compounds of the formula I and other novel 2-substituted phenyl- benzotriazole compounds.

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