Process to obtain dimers, trimers and up to polymers from...

Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – Nitrogen-containing reactant

Reexamination Certificate

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C526S263000, C546S026000, C546S027000, C546S255000

Reexamination Certificate

active

07989583

ABSTRACT:
The dimerization or polymerization reaction of pyridinic alcohols is carried out in order to produce novel products. The process is carried out in the absence or presence of some solvent, during the process of the current invention, temperature may be or may be not used as catalyst, in the process of the current invention the reaction may be or may not be catalyzed by the presence of a catalyst (acid or base), the resultant products can be produced and separated in an easy way, in the process of the current invention starting from pyridinic alcohols the resultant ethenediols can be produced by a single step reaction. The pyridinemethanol derivatives used as starting compounds, do not oxidize as easily and their handling is easier than that of other compounds. The products produced with etheneidol parts can be used as antioxidants due to their capacity to act as free radicals scavengers.

REFERENCES:
Percino et al. “Synthesis, characterisation and crystal structure of 1,2-bis(6-methylpyridin-2-yl)ethene-1,2-diol”. J. Chem. Res. 2005, 12, 757-760.
Alan R. Katritzky, Andrzej R. Lapucha, and Michael Siskin. “Aqueous high-temperature chemistry of carbo and heterocycles. 3. 2-Substituted pyridines” Energy & Fuels 1990, 4(5), 506-510.
Percino et al. “Synthesis, Characterisation and Crystal Structure of a co-crystal of two components: 1,2-bis(6-methylpyridin-2-yl)ethane-1,2-dione and 1-(pyriin-2-yl)-2-(6-methylpyridin-2-yl)ethane-1,2-dione”. J. Chem. Res. 2007, 3, 185-189.
Robert B. Moll, Edward J. Poziomek, and William A. Mosher. “Chemistry of di-2-pyridylglyoxal”. J. Org. Chem. 1971, 36(8), 1056-1061.
Percino et al. “Synthesis of 1,2-dimethoxy-1,2-di(pyridin-2-yl)1,2-ethanediol: Crystal and molecular structure determination”. J. Chem. Cryst. 2006, 36(5), 303-308.

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