Organic solvent-free process for the preparation of...

Details Organic solvent-free process for the preparation of... Organic solvent-free process for the preparation of...

C - Chemistry, Metallurgy

09

B

C09B 41/00 (2006.01) C07C 245/08 (2006.01) C07D 249/20 (2006.01) C09B 29/12 (2006.01)

Patent

CA 2465398

Provided is a novel one-pot, organic solvent-free process for the preparation of 2-(2-nitrophenylazo) substituted phenols. The 2-(2-nitrophenylazo) substituted phenols are precursors for hydroxyphenylbenzotriazole UV absorbers.

L'invention concerne un procédé monotope de fabrication de 2-(2-nitrophénylazo)phénols substitués sans solvants. Les 2-(2-nitrophénylazo)phénols substitués sont des précurseurs d'absorbeurs UV hydroxyphénylbenzotriazole.

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